This is a table of type quadgram and their frequencies. Use it to search & browse the list to learn more about your study carrel.
quadgram | frequency |
---|---|
in the case of | 133 |
on the other hand | 124 |
the nature of the | 71 |
of the same species | 62 |
the conditions of life | 60 |
with respect to the | 56 |
the case of the | 52 |
in the same manner | 51 |
to a certain extent | 51 |
of animals and plants | 45 |
in the course of | 43 |
of use and disuse | 42 |
effects of use and | 39 |
at the same time | 38 |
in a state of | 38 |
there can be no | 37 |
a state of nature | 37 |
in the zoological gardens | 36 |
the development of the | 36 |
individuals of the same | 35 |
the effects of use | 32 |
we have seen that | 30 |
changed conditions of life | 29 |
a large number of | 28 |
the colour of the | 28 |
the fact that the | 27 |
as in the case | 27 |
can be no doubt | 27 |
animals and plants under | 26 |
and plants under domestication | 26 |
reason to believe that | 26 |
of the effects of | 25 |
variation of animals and | 25 |
the same manner as | 24 |
it is impossible to | 24 |
the members of the | 24 |
so it is with | 24 |
the varieties of the | 23 |
in regard to the | 23 |
i do not know | 22 |
for the most part | 22 |
parts of the body | 22 |
a long series of | 21 |
it is difficult to | 21 |
in the conditions of | 21 |
is one of the | 20 |
of the same family | 20 |
be no doubt that | 20 |
it is certain that | 19 |
with their own pollen | 19 |
the length of the | 19 |
the direct action of | 19 |
it is well known | 19 |
it is probable that | 19 |
by the pollen of | 19 |
as well as the | 18 |
development of the wings | 18 |
of the wings of | 18 |
as we shall see | 18 |
the shape of the | 18 |
in a future chapter | 18 |
the effects of the | 18 |
informs me that he | 17 |
vary in the same | 17 |
one of the most | 17 |
the individuals of the | 17 |
that is to say | 17 |
the act of crossing | 17 |
we do not know | 17 |
the male and female | 17 |
of the insect tribes | 17 |
slight changes in the | 17 |
in the last chapter | 17 |
changes in the conditions | 17 |
the size of the | 17 |
the evil effects of | 17 |
of the nature of | 16 |
is by no means | 16 |
differ from each other | 16 |
which they have been | 16 |
the theory of selection | 16 |
at the present day | 16 |
the case with the | 16 |
we may conclude that | 16 |
as a matter of | 16 |
as we have seen | 16 |
on one of the | 15 |
the definite action of | 15 |
by the fact that | 15 |
action of changed conditions | 15 |
the distribution of the | 15 |
the structure of the | 15 |
effects of close interbreeding | 15 |
of the same variety | 15 |
on the development of | 15 |
on the nature of | 15 |
is well known that | 15 |
to believe that the | 15 |
the character of the | 14 |
on the effects of | 14 |
as far as i | 14 |
corresponding periods of life | 14 |
a greater or less | 14 |
inheritance of the effects | 14 |
the inherited effects of | 14 |
the pollen of a | 14 |
the origin of the | 14 |
in the west indies | 14 |
of a distinct species | 14 |
we have seen in | 14 |
there is no reason | 14 |
we shall see in | 14 |
members of the same | 14 |
in accordance with the | 13 |
on the authority of | 13 |
at corresponding periods of | 13 |
on the breeding of | 13 |
in the chapter on | 13 |
the form of the | 13 |
we are led to | 13 |
without the aid of | 13 |
we shall presently see | 13 |
that this is the | 13 |
is no reason to | 13 |
the principle of selection | 13 |
is due to the | 13 |
a large proportion of | 13 |
to the action of | 13 |
to the fact that | 13 |
have seen in the | 13 |
in different parts of | 13 |
have been exposed to | 13 |
the conditions to which | 13 |
as that of the | 13 |
to vary in the | 13 |
to which they have | 13 |
the rest of the | 13 |
part of the body | 13 |
a variety of the | 13 |
inheritance at corresponding periods | 12 |
a few of the | 12 |
to be the case | 12 |
could not have been | 12 |
more or less sterile | 12 |
a consequence of the | 12 |
dimorphic and trimorphic plants | 12 |
as a consequence of | 12 |
in the light of | 12 |
cape of good hope | 12 |
it seems to me | 12 |
of the inheritance of | 12 |
in the same direction | 12 |
a vast number of | 12 |
fertilised by the pollen | 12 |
by their own pollen | 12 |
fertilised by their own | 12 |
a change in the | 12 |
an arrest of development | 12 |
effects of natural selection | 12 |
for the sake of | 12 |
on the one hand | 12 |
the number of the | 12 |
the constitution of the | 12 |
it is possible that | 12 |
but there is no | 12 |
it is with the | 12 |
the offspring of the | 12 |
this is the case | 12 |
of the madeira islands | 12 |
it is said that | 12 |
from each other in | 12 |
in the direction of | 12 |
varieties of the same | 12 |
the inheritance of the | 12 |
in this case the | 12 |
the crossing of distinct | 12 |
different parts of the | 12 |
inheritance of acquired characters | 11 |
that there is no | 11 |
is that of the | 11 |
to the conclusion that | 11 |
is the case with | 11 |
as the result of | 11 |
the tendency to reversion | 11 |
all parts of the | 11 |
it might have been | 11 |
in the earlier chapters | 11 |
the cape of good | 11 |
of varieties of the | 11 |
with the exception of | 11 |
by the union of | 11 |
animals and cultivated plants | 11 |
transmission of acquired characters | 11 |
of the same nature | 11 |
of change of soil | 11 |
was shown in the | 11 |
analogous facts have been | 11 |
of the same individual | 11 |
i may add that | 11 |
various parts of the | 11 |
one of the madeira | 11 |
parts of the world | 11 |
facts have been observed | 11 |
we may infer that | 11 |
on the origin of | 11 |
may be due to | 11 |
of the organic world | 11 |
by the aid of | 11 |
change of soil to | 11 |
far as i can | 11 |
sides of the body | 11 |
cases in which the | 11 |
in the fact that | 11 |
crossing of varieties of | 11 |
the inheritance of acquired | 11 |
in nearly the same | 11 |
it is clear that | 11 |
to account for the | 10 |
far as we can | 10 |
evil effects of close | 10 |
from the fact that | 10 |
at the end of | 10 |
for the production of | 10 |
by the nature of | 10 |
as a cause of | 10 |
their conditions of life | 10 |
and in some cases | 10 |
that the effects of | 10 |
it is to be | 10 |
so far as the | 10 |
in the same way | 10 |
the effects of disuse | 10 |
breeds of the fowl | 10 |
the course of time | 10 |
that the crossing of | 10 |
the appearance of a | 10 |
in a former chapter | 10 |
might have been expected | 10 |
in the number of | 10 |
to the nature of | 10 |
domesticated animals and cultivated | 10 |
there is reason to | 10 |
to the inheritance of | 10 |
in their native country | 10 |
origin of the dog | 10 |
the position of the | 10 |
pollen of a distinct | 10 |
the history of the | 10 |
of the reproductive organs | 10 |
are more or less | 10 |
and so it is | 10 |
of the madeiran group | 10 |
have seen that the | 10 |
there can be little | 10 |
of the conditions of | 10 |
the weight of the | 10 |
in some few cases | 10 |
species of the same | 10 |
common to madeira and | 10 |
in the formation of | 10 |
so far as i | 10 |
that it is a | 10 |
on the fertility of | 10 |
on account of their | 10 |
so far as to | 10 |
on the summit of | 10 |
use or disuse of | 10 |
can be little doubt | 10 |
it has been found | 10 |
the study of variation | 10 |
of the appearance of | 10 |
will be found to | 9 |
the case of a | 9 |
from a distinct plant | 9 |
a long course of | 9 |
in the first generation | 9 |
of the two forms | 9 |
advantage of change of | 9 |
large number of individuals | 9 |
which we have been | 9 |
than it is in | 9 |
it is not surprising | 9 |
animals and plants which | 9 |
the power of selection | 9 |
as far as we | 9 |
no reason to believe | 9 |
the state of the | 9 |
and on the other | 9 |
the right and left | 9 |
of our domesticated animals | 9 |
when we reflect on | 9 |
to which they are | 9 |
the growth of the | 9 |
but i do not | 9 |
is well known to | 9 |
see in a future | 9 |
direct action of the | 9 |
by its own pollen | 9 |
to suppose that the | 9 |
derived from a cross | 9 |
conditions to which they | 9 |
the action of the | 9 |
as shown by the | 9 |
have been observed with | 9 |
definite action of the | 9 |
its concentration in s | 9 |
to show that the | 9 |
the origin of species | 9 |
prepotency of transmission in | 9 |
descended from the same | 9 |
accounted for by the | 9 |
in the swiss lake | 9 |
for the reason that | 9 |
the struggle for existence | 9 |
to the formation of | 9 |
a more or less | 9 |
in the nature of | 9 |
is reason to believe | 9 |
the summit of the | 9 |
reason to suppose that | 9 |
it is notorious that | 9 |
the transmission of acquired | 9 |
natural or artificial selection | 9 |
facts given in the | 9 |
it would appear that | 9 |
disuse of parts in | 9 |
on the same side | 9 |
in the united states | 9 |
shall see in a | 9 |
to which it is | 9 |
with the pollen of | 9 |
in support of this | 9 |
the appearance of the | 9 |
be accounted for by | 9 |
from a common progenitor | 9 |
use and disuse of | 9 |
to the development of | 9 |
it is evident that | 9 |
to madeira and sicily | 9 |
we know that the | 9 |
be little doubt that | 9 |
with its own pollen | 9 |
of the higher animals | 9 |
from a cross between | 8 |
may be seen in | 8 |
during a long series | 8 |
gemmules derived from the | 8 |
and it is not | 8 |
effect of foreign pollen | 8 |
as one of the | 8 |
in various parts of | 8 |
in the same individual | 8 |
in the higher animals | 8 |
the production of a | 8 |
the two sides of | 8 |
the development of each | 8 |
have been brought about | 8 |
from changed conditions of | 8 |
the species of the | 8 |
of disuse of parts | 8 |
has been known to | 8 |
to breed in captivity | 8 |
plants of the same | 8 |
in the neighbourhood of | 8 |
the horse and ass | 8 |
the end of the | 8 |
effects of disuse of | 8 |
no reason to suppose | 8 |
we have already seen | 8 |
it may perhaps be | 8 |
difference in fertility between | 8 |
at a very early | 8 |
be the case with | 8 |
of secondary sexual characters | 8 |
of the origin of | 8 |
the direction of the | 8 |
the facts given in | 8 |
that there is a | 8 |
on the whole the | 8 |
from the effects of | 8 |
bear in mind that | 8 |
be said to be | 8 |
as i hear from | 8 |
in so far as | 8 |
species of the genus | 8 |
is not surprising that | 8 |
of the theory of | 8 |
good reason to believe | 8 |
of the organic creation | 8 |
as is well known | 8 |
opposite sides of the | 8 |
of foreign pollen on | 8 |
it is in the | 8 |
there must be some | 8 |
as a general rule | 8 |
have been observed in | 8 |
the gemmules derived from | 8 |
as due to the | 8 |
change in the conditions | 8 |
appearance of new characters | 8 |
and that it is | 8 |
are supposed to be | 8 |
but it may be | 8 |
in the development of | 8 |
the hypothesis of pangenesis | 8 |
in the south of | 8 |
of the principle of | 8 |
the formation of new | 8 |
for the study of | 8 |
is probable that the | 8 |
facts could be given | 8 |
it will be found | 8 |
with that of the | 8 |
on the inheritance of | 8 |
of the same genus | 8 |
the fact that in | 8 |
the causes of variation | 8 |
in the colour of | 8 |
would seem to be | 8 |
perhaps a state of | 8 |
me that he has | 8 |
we see that the | 8 |
we reflect on the | 8 |
right and left sides | 8 |
in spite of the | 8 |
of the falkland islands | 8 |
in the distribution of | 8 |
have already seen that | 8 |
the greater number of | 8 |
in the animal kingdom | 8 |
in some of the | 8 |
on a broad scale | 8 |
the difference in fertility | 8 |
to the theory of | 8 |
on the difference in | 8 |
like those of the | 8 |
long intervals of time | 8 |
the difference between the | 8 |
that there is some | 8 |
do not know whether | 8 |
of domestic and wild | 8 |
to me by mr | 8 |
the cause of the | 8 |
survival of the fittest | 8 |
be due to the | 8 |
on the cultivation of | 8 |
prepotency of transmission of | 8 |
in support of the | 8 |
i am informed by | 8 |
is due to a | 8 |
that it is only | 8 |
attention to the fact | 7 |
the surface of the | 7 |
beings in a state | 7 |
in the constitution of | 7 |
the principle of inheritance | 7 |
may be said to | 7 |
but in this case | 7 |
nearly the same manner | 7 |
may conclude that the | 7 |
with respect to plants | 7 |
in the same country | 7 |
of the nervous system | 7 |
after an interval of | 7 |
crossing of domestic and | 7 |
and in the other | 7 |
in exactly the same | 7 |
in the transmission of | 7 |
two distinct states of | 7 |
the limits of the | 7 |
to the present day | 7 |
materials for the study | 7 |
we thus see that | 7 |
the course of a | 7 |
in the north of | 7 |
on the dezerta grande | 7 |
of the same plant | 7 |
the action of certain | 7 |
kept in the same | 7 |
our being able to | 7 |
side of the body | 7 |
a matter of fact | 7 |
be a doubt that | 7 |
on the stigma of | 7 |
are said to be | 7 |
it is by no | 7 |
must be attributed to | 7 |
be regarded as a | 7 |
of crossing in itself | 7 |
on the conditions of | 7 |
of inheritance at corresponding | 7 |
varieties of the apple | 7 |
sterility of crossed species | 7 |
i believe that the | 7 |
be attributed to the | 7 |
i have heard of | 7 |
on the variability of | 7 |
it has been observed | 7 |
the existence of a | 7 |
to a large extent | 7 |
the present state of | 7 |
in the first place | 7 |
that it is in | 7 |
in the one case | 7 |
to the attacks of | 7 |
in this case we | 7 |
action of the conditions | 7 |
it is scarcely possible | 7 |
we must believe that | 7 |
through the reproductive system | 7 |
in the scilly islands | 7 |
species in a state | 7 |
there is only one | 7 |
to the production of | 7 |
as well as of | 7 |
on opposite sides of | 7 |
at the present time | 7 |
summary of the three | 7 |
presence or absence of | 7 |
a considerable number of | 7 |
the appearance of new | 7 |
to which i have | 7 |
i hear from mr | 7 |
the characters of the | 7 |
be fertilised by the | 7 |
but it is not | 7 |
displacement of the zero | 7 |
in spite of this | 7 |
the base of the | 7 |
in our own country | 7 |
breeds of the pigeon | 7 |
which have long been | 7 |
the sterility of hybrids | 7 |
of the same sex | 7 |
at an early age | 7 |
on the evil effects | 7 |
the direction of variation | 7 |
from time to time | 7 |
in comparison with the | 7 |
to be fertilised by | 7 |
it at first appears | 7 |
the greater or less | 7 |
parts of the same | 7 |
of the organs of | 7 |
a case in point | 7 |
ready to be evolved | 7 |
of the characters of | 7 |
each other in their | 7 |
flowers on the same | 7 |
in a greater or | 7 |
which it has been | 7 |
on the crossing of | 7 |
of tierra del fuego | 7 |
the great principle of | 7 |
as i am informed | 7 |
the good effects of | 7 |
units of the body | 7 |
cases could be given | 7 |
organic beings in a | 7 |
the distinction between the | 7 |
on the varieties of | 7 |
nature of the conditions | 7 |
in which they are | 7 |
amount of difference between | 7 |
we have also seen | 7 |
by the conditions of | 7 |
in the eleventh chapter | 7 |
a difference in the | 7 |
the inheritance of a | 7 |
that many of the | 7 |
as well as in | 7 |
to the same conclusion | 7 |
to which we have | 7 |
the result of a | 7 |
and it has been | 7 |
have been derived from | 7 |
little doubt that the | 7 |
their peculiarity to s | 7 |
the survival of the | 7 |
in a position to | 7 |
have been recorded of | 7 |
that the act of | 7 |
in the structure of | 7 |
the aid of selection | 7 |
on the selection of | 7 |
and in this case | 7 |
the parts of the | 7 |
act of crossing in | 7 |
the various kinds of | 7 |
as it at first | 7 |
the opposite sides of | 7 |
the seed of the | 7 |
on the same plant | 7 |
sense of the word | 7 |
in the shape of | 7 |
the outward contour of | 7 |
during their early development | 7 |
be looked at as | 7 |
pollen from a distinct | 7 |
from the facts given | 6 |
would not wish to | 6 |
it is true that | 6 |
the south of france | 6 |
not in the least | 6 |
coloured varieties of the | 6 |
members of the insect | 6 |
we bear in mind | 6 |
from generation to generation | 6 |
seems to be a | 6 |
one side of the | 6 |
in the following chapter | 6 |
greater or less degree | 6 |
of the varieties of | 6 |
the fruit of the | 6 |
when we bear in | 6 |
in proportion to the | 6 |
modern classification of insects | 6 |
organs of sight and | 6 |
we are able to | 6 |
religion of nature delineated | 6 |
be seen in the | 6 |
the change in the | 6 |
the result of the | 6 |
period of appearance of | 6 |
that in all cases | 6 |
with the colour of | 6 |
greater or less extent | 6 |
it is stated that | 6 |
of the insect world | 6 |
in the offspring of | 6 |
in the production of | 6 |
the importance of the | 6 |
that it is impossible | 6 |
some of the cases | 6 |
the inherited effect of | 6 |
are well known to | 6 |
an early period of | 6 |
in a more or | 6 |
characters of the two | 6 |
as to the nature | 6 |
it may be that | 6 |
certain varieties of the | 6 |
are on the whole | 6 |
from first to last | 6 |
more or less completely | 6 |
by pollen taken from | 6 |
there is good reason | 6 |
introduction to the modern | 6 |
long series of generations | 6 |
to the principle of | 6 |
but it would be | 6 |
without our being able | 6 |
in spite of disuse | 6 |
indirectly through the reproductive | 6 |
the greatest amount of | 6 |
the whole mass of | 6 |
in a similar manner | 6 |
within the limits of | 6 |
in this latter case | 6 |
have attempted to show | 6 |
the modern classification of | 6 |
action of the reproductive | 6 |
but we have no | 6 |
with pollen from the | 6 |
to the modern classification | 6 |
at the base of | 6 |
cases have been recorded | 6 |
on the number of | 6 |
in the proportion of | 6 |
under their natural conditions | 6 |
of the swiss lake | 6 |
in the foregoing cases | 6 |
every one knows how | 6 |
on a variety of | 6 |
the influence of the | 6 |
has been observed in | 6 |
of soil to plants | 6 |
when we consider the | 6 |
for the development of | 6 |
their concentration in australia | 6 |
the doctrine of specific | 6 |
in the state of | 6 |
informs me that the | 6 |
of the same flower | 6 |
the force of inheritance | 6 |
of our own country | 6 |
the same flower or | 6 |
in the madeira islands | 6 |
in the same species | 6 |
allowed to cross freely | 6 |
we have no reason | 6 |
inheritance in the horse | 6 |
the eggs of the | 6 |
with animals and plants | 6 |
conditions of life on | 6 |
and the nature of | 6 |
as shown in the | 6 |
the animal and vegetable | 6 |
exactly the same manner | 6 |
the degree of sterility | 6 |
might have been thought | 6 |
at long intervals of | 6 |
to be evolved under | 6 |
to an extreme point | 6 |
varieties of the plum | 6 |
this part of the | 6 |
feral animals and plants | 6 |
with the result that | 6 |
have also seen that | 6 |
a cause of variability | 6 |
in the highest degree | 6 |
to selection by man | 6 |
well known to be | 6 |
with the view that | 6 |
it was shown in | 6 |
not in any way | 6 |
given in the earlier | 6 |
tend to be inherited | 6 |
domesticated animals and plants | 6 |
the principle of economy | 6 |
i have attempted to | 6 |
to be met with | 6 |
as a result of | 6 |
nature of the food | 6 |
that some of the | 6 |
the good derived from | 6 |
is scarcely possible to | 6 |
it is only in | 6 |
that it may be | 6 |
two sides of the | 6 |
like that of the | 6 |
with regard to the | 6 |
a cause of sterility | 6 |
would not have been | 6 |
to the selection of | 6 |
how it is that | 6 |
the way in which | 6 |
large proportion of the | 6 |
crossing of white and | 6 |
have the power of | 6 |
manner in which the | 6 |
according to our hypothesis | 6 |
of the body is | 6 |
it can hardly be | 6 |
by the law of | 6 |
in the ninth chapter | 6 |
one or the other | 6 |
is a much more | 6 |
effects of changed conditions | 6 |
the case of plants | 6 |
on the good effects | 6 |
the application of the | 6 |
the coloration of the | 6 |
in our domesticated animals | 6 |
of the two species | 6 |
the aid of a | 6 |
of the body in | 6 |
it must have been | 6 |
they have not been | 6 |
use and disuse are | 6 |
to the inherited effects | 6 |
the process of selection | 6 |
other parts of the | 6 |
the case of animals | 6 |
the root of the | 6 |
to some of the | 6 |
modified in the same | 6 |
as it seems to | 6 |
it would be interesting | 6 |
the various forms of | 6 |
true it is that | 6 |
are the result of | 6 |
to be due to | 6 |
the principle of the | 6 |
there is evidence that | 6 |
of sight and hearing | 6 |
period of gestation in | 6 |
from their natural conditions | 6 |
i am aware that | 6 |
the union of two | 6 |
crossed with a distinct | 6 |
feet above the sea | 6 |
we ought not to | 6 |
the chapter on pangenesis | 6 |
an important part in | 6 |
favourable to selection by | 6 |
the flowers of the | 6 |
in all these cases | 6 |
in one of the | 6 |
it is remarkable that | 6 |
which i have already | 6 |
as far as the | 6 |
on the dogs of | 6 |
use and disuse in | 6 |
during several generations to | 6 |
belong to the same | 6 |
the forms of reproduction | 6 |
the development of a | 6 |
in relation to the | 6 |
i am inclined to | 6 |
at the cape of | 6 |
to look at the | 6 |
certain parts of the | 6 |
every part of the | 6 |
the process by which | 6 |
the problem of the | 6 |
a certain number of | 6 |
as we see in | 6 |
in the third generation | 6 |
several breeds of the | 6 |
a case of reversion | 6 |
of male characters by | 6 |
assumption of male characters | 6 |
number of seeds in | 6 |
to a difference in | 6 |
which have been long | 6 |
the shape of each | 6 |
so that it is | 6 |
of the last century | 6 |
and there can be | 6 |
varieties of the pea | 6 |
from slight changes in | 6 |
can be no question | 6 |
found in the swiss | 6 |
it has often been | 6 |
changed habits of life | 6 |
the outward aspect of | 6 |
the elements of the | 6 |
limits of the same | 6 |
a strong tendency to | 6 |
of a large number | 6 |
the organs of sight | 6 |
as we shall presently | 6 |
on a large scale | 6 |
to a greater or | 6 |
parts of the organisation | 6 |
shall presently see that | 6 |
on the colours of | 6 |
the stigma of the | 6 |
rendered in some degree | 6 |
i have been assured | 6 |
it is obvious that | 6 |
in the same family | 6 |
in the same place | 6 |
the reappearance of long | 6 |
removed from their natural | 5 |
in order that the | 5 |
effects of the increased | 5 |
plant of the same | 5 |
the presence or absence | 5 |
in such a way | 5 |
we may infer from | 5 |
in the latter case | 5 |
any change in the | 5 |
i refer to the | 5 |
in fertility between crossed | 5 |
inheritance as limited by | 5 |
the pollen of the | 5 |
that they would have | 5 |
on the effect of | 5 |
that there may be | 5 |
it is not in | 5 |
conditions of life to | 5 |
that this is a | 5 |
so long as the | 5 |
of one of the | 5 |
on their outer limits | 5 |
always apterous in madeira | 5 |
if it can be | 5 |
there is no more | 5 |
except in the case | 5 |
in these cases the | 5 |
closely allied natural species | 5 |
the manner in which | 5 |
all the individuals of | 5 |
we are driven to | 5 |
in the struggle for | 5 |
of transmission in the | 5 |
of the domestic duck | 5 |
in their conditions of | 5 |
of the existence of | 5 |
on the fleece of | 5 |
in the order of | 5 |
is it possible to | 5 |
exceptions to the rule | 5 |
the absence of the | 5 |
of some of the | 5 |
the attitude of repose | 5 |
the sterility of the | 5 |
the first appearance of | 5 |
transmitted to the offspring | 5 |
to reversion to a | 5 |
in these cases we | 5 |
i shall perhaps be | 5 |
in the absence of | 5 |
and one of them | 5 |
i have met with | 5 |
we may feel assured | 5 |
cannot be accounted for | 5 |
in their native land | 5 |
has the power of | 5 |
of use or disuse | 5 |
influence of selection on | 5 |
we see something of | 5 |
in the region of | 5 |
in speaking of the | 5 |
of heat and cold | 5 |
of any other colour | 5 |
in the evolution of | 5 |
to that of the | 5 |
in a large measure | 5 |
conditions of life being | 5 |
as soon as the | 5 |
stigma of the same | 5 |
of the male element | 5 |
it is very difficult | 5 |
of the increased use | 5 |
given with respect to | 5 |
from the action of | 5 |
think it far from | 5 |
and some of the | 5 |
their concentration in southern | 5 |
i would not wish | 5 |
on the same tree | 5 |
action of the surrounding | 5 |
from what we know | 5 |
of change in the | 5 |
the genetic behaviour of | 5 |
under a single point | 5 |
formation of new races | 5 |
the jardin des plantes | 5 |
be more or less | 5 |
several members of the | 5 |
is not possible to | 5 |
the tips of the | 5 |
in some cases the | 5 |
of the wings in | 5 |
be affected by the | 5 |
varieties of the potato | 5 |
affected by changed conditions | 5 |
and that of the | 5 |
direct action of changed | 5 |
from a distinct individual | 5 |
are believed to be | 5 |
taken from the same | 5 |
but this is not | 5 |
the selection of the | 5 |
that they are not | 5 |
buds on the same | 5 |
varieties of the peach | 5 |
white variety of v | 5 |
concentration in southern africa | 5 |
in the first part | 5 |
removed from each other | 5 |
the effects of crossing | 5 |
been brought about by | 5 |
at the same age | 5 |
will be found in | 5 |
by natural or artificial | 5 |
and there is no | 5 |
that the distinctions between | 5 |
the study of the | 5 |
of transmission of character | 5 |
those cases in which | 5 |
being able to assign | 5 |
is said to have | 5 |
of changed conditions of | 5 |
the white variety of | 5 |
case has been recorded | 5 |
of the process of | 5 |
that they should be | 5 |
in that of the | 5 |
effects of interbreeding on | 5 |
in their power of | 5 |
other individuals of the | 5 |
act on each other | 5 |
it will be perceived | 5 |
and the effects of | 5 |
the great majority of | 5 |
of the surrounding conditions | 5 |
beneath the control of | 5 |
we have been just | 5 |
segments in the same | 5 |
we must conclude that | 5 |
law of nature that | 5 |
i have been informed | 5 |
be supposed to be | 5 |
good is derived from | 5 |
remarks on this subject | 5 |
the fleece of sheep | 5 |
in an analogous manner | 5 |
which has long been | 5 |
of the pacific islands | 5 |
a law of nature | 5 |
in the time of | 5 |
the effects of long | 5 |
in the animal and | 5 |
and size of the | 5 |
circumstances favourable to selection | 5 |
that it has been | 5 |
period of action of | 5 |
a matter of experience | 5 |
of the united states | 5 |
a tendency to vary | 5 |
have been observed to | 5 |
bred in the zoological | 5 |
nature of the case | 5 |
to the problem of | 5 |
have no means of | 5 |
the excessive development of | 5 |
the increased size of | 5 |
which have been exposed | 5 |
the division of the | 5 |
it may be asked | 5 |
with pollen of the | 5 |
see this in the | 5 |
relation to each other | 5 |
called my attention to | 5 |
different conditions of life | 5 |
on account of the | 5 |
in the present instance | 5 |
and fertility of the | 5 |
inheritance of peculiarities in | 5 |
the truth of the | 5 |
breeds of the dog | 5 |
i think it far | 5 |
what we know of | 5 |
culinary and agricultural plants | 5 |
a single point of | 5 |
a long succession of | 5 |
in the present state | 5 |
the significance of the | 5 |
the case may be | 5 |
the tissues of the | 5 |
at some former period | 5 |
appear at first sight | 5 |
at about the same | 5 |
of dimorphic and trimorphic | 5 |
is in some way | 5 |
of lost parts in | 5 |
so it has been | 5 |
at the age of | 5 |
of the body are | 5 |
are those which have | 5 |
with our domesticated animals | 5 |
the belief in the | 5 |
have been kept in | 5 |
by the action of | 5 |
the college of surgeons | 5 |
here is a more | 5 |
have been attended to | 5 |
definite action of changed | 5 |
i am not aware | 5 |
it was shown that | 5 |
of the same kind | 5 |
in the same animal | 5 |
as we now see | 5 |
a very early period | 5 |
on the insects of | 5 |
far at least as | 5 |
i have shown in | 5 |
feathers on the head | 5 |
outward contour of the | 5 |
and left sides of | 5 |
the tendency to sterility | 5 |
of cattle and sheep | 5 |
are liable to be | 5 |
the fact of the | 5 |
of a variety of | 5 |
the period of gestation | 5 |
in the same flower | 5 |
single point of view | 5 |
on the same principle | 5 |
the steps by which | 5 |
on the part of | 5 |
many other such cases | 5 |
and in the case | 5 |
no doubt that this | 5 |
the sides of the | 5 |
we cannot doubt that | 5 |
the two outer toes | 5 |
a more curious case | 5 |
is difficult to understand | 5 |
the tail of the | 5 |
as limited by sex | 5 |
of feathers on the | 5 |
the fertility of the | 5 |
reversion in hybrids of | 5 |
and i believe that | 5 |
in the vegetable kingdom | 5 |
that there must be | 5 |
minority in crossed races | 5 |
persistency of character in | 5 |
can be crossed with | 5 |
is known to be | 5 |
as an instance of | 5 |
two or three generations | 5 |
merge into each other | 5 |
to the definite action | 5 |
which can be propagated | 5 |
the upper and lower | 5 |
in the form of | 5 |
use and disuse on | 5 |
it is not possible | 5 |
with pollen from a | 5 |
the subsequent progeny of | 5 |
the existence of the | 5 |
we must suppose that | 5 |
the legs of the | 5 |
formed by the union | 5 |
as a case of | 5 |
be fertilised by their | 5 |
so far at least | 5 |
of our domesticated productions | 5 |
living under their natural | 5 |
development of the organs | 5 |
and we know that | 5 |
to the influence of | 5 |
does not seem to | 5 |
on the colour of | 5 |
the axis of the | 5 |
with the varieties of | 5 |
the gemmules of the | 5 |
on the intercrossing of | 5 |
long series of ages | 5 |
the young of the | 5 |
with a distinct species | 5 |
would have to be | 5 |
a length of time | 5 |
to the court of | 5 |
that one of the | 5 |
the amount of difference | 5 |
when fertilised by the | 5 |
at an early period | 5 |
functional independence of the | 5 |
with reference to the | 5 |
it is that the | 5 |
a part of the | 5 |
during a long course | 5 |
our domesticated animals and | 5 |
other members of the | 5 |
it is possible for | 5 |
as they grow old | 5 |
in correlation with the | 5 |
they have been subjected | 5 |
of life to which | 5 |
what has been said | 5 |
animals and plants have | 5 |
and plants which have | 5 |
the court of ava | 5 |
so that here we | 5 |
that it is the | 5 |
out of the question | 5 |
by the appearance of | 5 |
that here we have | 5 |
were given in the | 5 |
that acquired characters are | 5 |
of cases in which | 5 |
has remarked that the | 5 |
the use of the | 5 |
domestic and wild cats | 5 |
in the thirteenth chapter | 5 |
to the belief that | 5 |
we see this in | 5 |
of the effect of | 5 |
the effect of the | 5 |
i have never seen | 5 |
differing from each other | 5 |
i do not think | 5 |
that the production of | 5 |
in comparison with those | 5 |
increased use or disuse | 5 |
the fact that they | 5 |
the whole of the | 5 |
the cases in which | 5 |
the power of inheritance | 5 |
of the same country | 5 |
the proportion of to | 5 |
we shall immediately see | 5 |
breeding on the female | 5 |
on the growth of | 5 |
with those of the | 5 |
regeneration of lost parts | 5 |
by the act of | 5 |
on the history of | 5 |
state of the reproductive | 5 |
in the cases of | 5 |
shall see in the | 5 |
in the attitude of | 5 |
the facts to be | 5 |
of the offspring of | 5 |
the two forms are | 5 |
to be regarded as | 5 |
same flower or fruit | 5 |
to the number of | 5 |
the power to produce | 5 |
in the botanic gardens | 5 |
the pigs of the | 5 |
they have been exposed | 5 |
methodical and unconscious selection | 5 |
in all parts of | 5 |
to distinguish between the | 5 |
to the individuals of | 5 |
we have no means | 5 |
the summits of the | 5 |
is clear that the | 5 |
a certain amount of | 5 |
belonging to the same | 5 |
have seen that in | 5 |
in a higher degree | 5 |
independence of the elements | 5 |
for the inheritance of | 5 |
of the species which | 5 |
is to a certain | 5 |
history of the dog | 5 |
the view that the | 5 |
in favour of the | 5 |
placed on the stigma | 5 |
characters derived from a | 5 |
is good reason to | 5 |
the fact that a | 5 |
and in this way | 5 |
common to both parents | 5 |
be interesting to know | 5 |
are eminently liable to | 5 |
inherited effects of disuse | 5 |
the bones of the | 5 |
of the germinal substance | 5 |
reciprocal crosses between the | 5 |
of the lower animals | 5 |
at a corresponding period | 5 |
they are supposed to | 5 |
as i can judge | 5 |
a distinct plant of | 5 |
at the same period | 5 |
which de vries has | 5 |
a latent tendency to | 5 |
in the fourth generation | 5 |
length of the beak | 5 |
we know of the | 5 |
of the crossed offspring | 5 |
wild animals and plants | 5 |
crossing of distinct species | 5 |
able to assign any | 5 |
regarded as due to | 5 |
when we reflect that | 5 |
in all such cases | 5 |
of the opposite sex | 5 |
the effects of natural | 5 |
effects of use or | 5 |
in the history of | 5 |
the power of transmitting | 5 |
the same individual animal | 5 |
is not the case | 5 |
is very difficult to | 5 |
of those who have | 5 |
summer and winter wheat | 5 |
would be interesting to | 5 |
conditions to which the | 5 |
of the reproductive system | 5 |
we are compelled to | 5 |
all the forms of | 5 |
for the explanation of | 5 |
good effects of crossing | 5 |
in the twelfth chapter | 5 |
have no reason to | 5 |
that they may be | 4 |
the production of new | 4 |
in the next generation | 4 |
in porto santo than | 4 |
to the effects of | 4 |
it is necessary to | 4 |
of male plumage by | 4 |
evidence of this in | 4 |
to which the name | 4 |
the character in question | 4 |
and varieties of the | 4 |
in a certain sense | 4 |
all that can be | 4 |
on any ordinary view | 4 |
as compared with the | 4 |
members of the family | 4 |
selection practised by the | 4 |
that of the other | 4 |
the occurrence of the | 4 |
in some of its | 4 |
on the pigs of | 4 |
it is most difficult | 4 |
the phenomena of variation | 4 |
summits of the loftiest | 4 |
on the right and | 4 |
the problem of species | 4 |
the results of the | 4 |
and it is clear | 4 |
which would seem to | 4 |
and colour of the | 4 |
on the same stigma | 4 |
of the same or | 4 |
the union of the | 4 |
varieties of the gooseberry | 4 |
i have seen a | 4 |
the condition of the | 4 |
are descended from a | 4 |
was the opinion of | 4 |
there must have been | 4 |
some change in the | 4 |
fertilised by its own | 4 |
the causes and laws | 4 |
the most liable to | 4 |
by means of the | 4 |
than that of the | 4 |
and i believe it | 4 |
the north of england | 4 |
what would be the | 4 |
so that if the | 4 |
of the fact that | 4 |
shape of each fragment | 4 |
that the development of | 4 |
a curious case of | 4 |
not so much as | 4 |
in the old surrey | 4 |
does not appear to | 4 |
can hardly be a | 4 |
and thus it is | 4 |
vast proportion of the | 4 |
in the philippine islands | 4 |
varieties of the vine | 4 |
a state of things | 4 |
to be seen in | 4 |
many varieties of the | 4 |
on the hind wing | 4 |
and visible in one | 4 |
which our domestic productions | 4 |
such a series of | 4 |
the forms of life | 4 |
which they are exposed | 4 |
the external conditions of | 4 |
in the organs of | 4 |
have reason to believe | 4 |
in which the term | 4 |
respect to the axis | 4 |
that gemmules derived from | 4 |
of colour in horses | 4 |
is liable to be | 4 |
far from improbable that | 4 |
the accumulative action of | 4 |
one and the same | 4 |
by segments in the | 4 |
which i have been | 4 |
similar facts could be | 4 |
latent in the other | 4 |
as may be seen | 4 |
to a much greater | 4 |
that it might be | 4 |
amount of modification which | 4 |
during the lifetime of | 4 |
for in this case | 4 |
we shall hereafter see | 4 |
during an early period | 4 |
each other and with | 4 |
different from that which | 4 |
unit throughout the body | 4 |
the variability of multiple | 4 |
taken from a distinct | 4 |
with the amount of | 4 |
to the members of | 4 |
to be capable of | 4 |
but they are not | 4 |
the hind feet of | 4 |
new conditions of life | 4 |
of double flowers and | 4 |
of the polish fowl | 4 |
i believe to be | 4 |
from the same species | 4 |
the great amount of | 4 |
the males and females | 4 |
different from each other | 4 |
other varieties of the | 4 |
the fauna of the | 4 |
of conditions of life | 4 |
to the conditions of | 4 |
can hardly be considered | 4 |
and of the soil | 4 |
is the same as | 4 |
to the reappearance of | 4 |
the power of transmission | 4 |
way connected with the | 4 |
on the subject of | 4 |
the three preceding chapters | 4 |
a great difference in | 4 |
in the size of | 4 |
tendency to vary in | 4 |
same character being present | 4 |
children of the same | 4 |
to think that the | 4 |
that it is difficult | 4 |
it can be shown | 4 |
sense in which the | 4 |
of the two types | 4 |
parts of south america | 4 |
the belief that the | 4 |
and the other half | 4 |
a cross with a | 4 |
when species are crossed | 4 |
from the crossing of | 4 |
the same state as | 4 |
were found to be | 4 |
forms of the same | 4 |
most valued by man | 4 |
the rate of absorption | 4 |
species which have been | 4 |
in the jardin des | 4 |
about the same age | 4 |
of the three preceding | 4 |
change in their conditions | 4 |
at an earlier age | 4 |
from zygote of form | 4 |
that good is derived | 4 |
how is it possible | 4 |
a native of the | 4 |
and others which are | 4 |
left sides of the | 4 |
variability of our domesticated | 4 |
cats with blue eyes | 4 |
the outside of the | 4 |
the breeding of the | 4 |
at a corresponding age | 4 |
the sexual elements of | 4 |
in the fifteenth chapter | 4 |
there seems to be | 4 |
of the fowl in | 4 |
side of the head | 4 |
of breeds of sheep | 4 |
through the action of | 4 |
to be found in | 4 |
in harmony with the | 4 |
in a slight degree | 4 |
one or both of | 4 |
the value of the | 4 |
it appears to me | 4 |
nature of the country | 4 |
opposed to the belief | 4 |
others of the same | 4 |
of the phenomena of | 4 |
one of the parents | 4 |
with pollen taken from | 4 |
can be propagated by | 4 |
in most cases the | 4 |
modification of old races | 4 |
by the presence of | 4 |
a form of h | 4 |
and which has been | 4 |
that they have not | 4 |
we are told that | 4 |
external conditions of life | 4 |
between varieties and species | 4 |
variation of homologous parts | 4 |
from some unknown cause | 4 |
appear to have been | 4 |
to be accounted for | 4 |
from the seed of | 4 |
early part of this | 4 |
or the other of | 4 |
one part and the | 4 |
yielded seed in the | 4 |
fertilised by pollen taken | 4 |
contour of the insect | 4 |
excessive development of the | 4 |
would be easy to | 4 |
the control of the | 4 |
through natural selection of | 4 |
have been modified by | 4 |
natural species of the | 4 |
whilst at the same | 4 |
varieties of the melon | 4 |
character being present and | 4 |
that the power of | 4 |
or in other words | 4 |
that they cannot be | 4 |
tendency to reversion in | 4 |
dureau de la malle | 4 |
be borne in mind | 4 |
tend to vary in | 4 |
eliminates the tendency to | 4 |
shown to be a | 4 |
in the following pages | 4 |
very early period of | 4 |
of the evil effects | 4 |
morbid tendencies common to | 4 |
blood in his veins | 4 |
we may believe that | 4 |
other side of the | 4 |
on a winged state | 4 |
six or seven generations | 4 |
of the development of | 4 |
those of the wild | 4 |
the repair of injuries | 4 |
from which they are | 4 |
white and yellow varieties | 4 |
as if they had | 4 |
for a long time | 4 |
were intermediate in character | 4 |
axis of the plant | 4 |
far as i am | 4 |
has led to the | 4 |
not been able to | 4 |
distinct races are not | 4 |
body in the same | 4 |
to do with the | 4 |
members of the organic | 4 |
may no doubt be | 4 |
young at a birth | 4 |
an example in which | 4 |
for the same reason | 4 |
it is practically certain | 4 |
on the assumption of | 4 |
of the distribution of | 4 |
varieties of the pear | 4 |
in a marked manner | 4 |
the increased or decreased | 4 |
all the members of | 4 |
the organs of vegetation | 4 |
fusion of homologous parts | 4 |
is only in the | 4 |
that the fact of | 4 |
acted on by the | 4 |
be found in the | 4 |
of laeta and velutina | 4 |
is possible that the | 4 |
correlated variation of homologous | 4 |
on this subject in | 4 |
which appear to be | 4 |
that he has seen | 4 |
of the forms of | 4 |
derived from the same | 4 |
the colour of their | 4 |
in proportion as the | 4 |
is not to be | 4 |
and in one instance | 4 |
to the appearance of | 4 |
the several breeds of | 4 |
from the cape of | 4 |
as i have done | 4 |
in the seventeenth chapter | 4 |
be the result of | 4 |
i have endeavoured to | 4 |
good derived from slight | 4 |
on the horses of | 4 |
in a dormant state | 4 |
of the feet in | 4 |
as to the genetic | 4 |
the male or female | 4 |
the shortening of the | 4 |
it is useless to | 4 |
appearance with advancing age | 4 |
on the principle of | 4 |
the part of the | 4 |
nothing can be more | 4 |
and we have seen | 4 |
origin and varieties of | 4 |
by one sex alone | 4 |
is perhaps the most | 4 |
than in the parent | 4 |
of the same sub | 4 |
either normally or abnormally | 4 |
a host of other | 4 |
it has been with | 4 |
one variety of the | 4 |
characters proper to the | 4 |
a consequence of this | 4 |
not proper to the | 4 |
form of the body | 4 |
some of the lower | 4 |
in feral animals and | 4 |
it is that we | 4 |
number of eggs of | 4 |
the assumption of a | 4 |
effects of food on | 4 |
the effects of a | 4 |
the first generation are | 4 |
the mode of reproduction | 4 |
of two or three | 4 |
some of the best | 4 |
or at any rate | 4 |
remarks on this head | 4 |
such is not the | 4 |
from the same seed | 4 |
tissues of the mother | 4 |
of seasonal conditions on | 4 |
on the left side | 4 |
of the several species | 4 |
the diminution of the | 4 |
the flowers on the | 4 |
what can be more | 4 |
that the study of | 4 |
the dogs of the | 4 |
its introduction into madeira | 4 |
of a first cross | 4 |
the body in the | 4 |
in several of the | 4 |
every one must have | 4 |
that in spite of | 4 |
hardly be a doubt | 4 |
a vast proportion of | 4 |
on the members of | 4 |
case of neuter insects | 4 |
the action of some | 4 |
physiological point of view | 4 |
we have previously seen | 4 |
i do not doubt | 4 |
which in the normal | 4 |
which seems to be | 4 |
to prove that the | 4 |
sterility from changed conditions | 4 |
are at the same | 4 |
the same side of | 4 |
we find that the | 4 |
one of the parent | 4 |
in the germ by | 4 |
there must be an | 4 |
latent tendency to become | 4 |
the islands of the | 4 |
so it is in | 4 |
rocks of the salvages | 4 |
through the law of | 4 |
of the most important | 4 |
the formation of the | 4 |
a winged state of | 4 |
they may have been | 4 |
the case of some | 4 |
it is necessary that | 4 |
extinction in porto santo | 4 |
it will be seen | 4 |
has bred several times | 4 |
to the absence of | 4 |
the same character being | 4 |
of domestication on fertility | 4 |
in some parts of | 4 |
to the same thing | 4 |
the assumption that the | 4 |
and on the evil | 4 |
the same as that | 4 |
the exception of the | 4 |
the two sets of | 4 |
to the north of | 4 |
that of the two | 4 |
it is hardly possible | 4 |
of the economy of | 4 |
and i have seen | 4 |
with the same result | 4 |
number of eggs in | 4 |
sides of the same | 4 |
have been assured by | 4 |
given on the authority | 4 |
must be regarded as | 4 |
conditions under which they | 4 |
as it may be | 4 |
that they do not | 4 |
in one sex than | 4 |
the wings of the | 4 |
pollen of the same | 4 |
it may be well | 4 |
close interbreeding may be | 4 |
by the male element | 4 |
the distinctions between them | 4 |
fertilised by pollen from | 4 |
the violence of the | 4 |
in a part of | 4 |
the time of the | 4 |
races of the pig | 4 |
in consequence of this | 4 |
by tubers in the | 4 |
used as the father | 4 |
be propagated by seed | 4 |
on the right side | 4 |
of the results of | 4 |
in connection with the | 4 |
when we hear that | 4 |
the several species of | 4 |
in the second place | 4 |
of the selection of | 4 |
the evil effects from | 4 |
various breeds of the | 4 |
i will not venture | 4 |
have but little doubt | 4 |
the land of passage | 4 |
all the varieties of | 4 |
during a long succession | 4 |
the same nature as | 4 |
breeds of cattle and | 4 |
communicated to me by | 4 |
been observed with plants | 4 |
of the wild boar | 4 |
as i am aware | 4 |
it appeared to me | 4 |
as we shall immediately | 4 |
the processes of division | 4 |
wear and tear of | 4 |
all organic beings occasionally | 4 |
in some cases to | 4 |
one of the higher | 4 |
absorption of the minority | 4 |
such cases may be | 4 |
only at long intervals | 4 |
according to the doctrine | 4 |
weight of the wing | 4 |
that the appearance of | 4 |
a great range of | 4 |
i have ventured to | 4 |
so much as a | 4 |
known to be the | 4 |
to nearly the same | 4 |
no doubt that the | 4 |
me that he believes | 4 |
the former of these | 4 |
would in all probability | 4 |
they are liable to | 4 |
in consequence of the | 4 |
in most of these | 4 |
on the leaves of | 4 |
to the male sex | 4 |
if such be the | 4 |
must be taken to | 4 |
to the doctrine of | 4 |
it is found that | 4 |
it may well be | 4 |
specific centres of creation | 4 |
cells of the same | 4 |
which the members of | 4 |
and vigour of the | 4 |
this view of the | 4 |
that animals and plants | 4 |
by pollen from a | 4 |
as was shown in | 4 |
point of view the | 4 |
support of this view | 4 |
many animals and plants | 4 |
the cultivation of the | 4 |
the colours of the | 4 |
is far from being | 4 |
races of animals and | 4 |
when both parents are | 4 |
an important bearing on | 4 |
the subject of the | 4 |
seeds in the capsule | 4 |
with each other and | 4 |
same manner as the | 4 |
the peach and nectarine | 4 |
to return to the | 4 |
of the northern type | 4 |
a direct cause of | 4 |
of a series of | 4 |
in the present chapter | 4 |
in many cases the | 4 |
may add that mr | 4 |
which have run wild | 4 |
we should remember that | 4 |
the yellow variety of | 4 |
of the elements or | 4 |
may be attributed to | 4 |
cross with a distinct | 4 |
is not easy to | 4 |
size of the feet | 4 |
due to the development | 4 |
cases have been observed | 4 |
on the sterility of | 4 |
be brought about by | 4 |
a great part of | 4 |
here we have a | 4 |
in all ordinary cases | 4 |
augmentation of morbid tendencies | 4 |
from the direct action | 4 |
be acted on by | 4 |
the facts of variation | 4 |
the distinctions between these | 4 |
has remarked to me | 4 |
the degree to which | 4 |
the spread of the | 4 |
cultivation of the wild | 4 |
causes and laws of | 4 |
refer the reader to | 4 |
crossed with any other | 4 |
is a consequence of | 4 |
inherited at a corresponding | 4 |
is said to be | 4 |
to believe that this | 4 |
of gemmules derived from | 4 |
with their own kind | 4 |
intercrossing of species of | 4 |
base of the beak | 4 |
under surface of the | 4 |
it is impossible not | 4 |
it is in madeira | 4 |
that a large number | 4 |
orifice of the nostrils | 4 |
nearly all the individuals | 4 |
on the theory of | 4 |
in a latent state | 4 |
cases given in the | 4 |
brought about by the | 4 |
or indirectly through the | 4 |
the red of the | 4 |
of such a nature | 4 |
the powers of flight | 4 |
a series of experiments | 4 |
on the under surface | 4 |
several varieties of the | 4 |
fertility between crossed species | 4 |
to the same general | 4 |
greatest amount of difference | 4 |
animal and vegetable kingdoms | 4 |
in some degree sterile | 4 |
have been selected for | 4 |
it is possible to | 4 |
the minority in crossed | 4 |
by the conditions to | 4 |
present and visible in | 4 |
of seeds in the | 4 |
affinity for each other | 4 |
principle of inheritance at | 4 |
same side of the | 4 |
in the following cases | 4 |
action of external conditions | 4 |
seems to me to | 4 |
i have but little | 4 |
but this is a | 4 |
in connexion with the | 4 |
varieties of the cabbage | 4 |
to a great extent | 4 |
more or less rudimentary | 4 |
exposed to the same | 4 |
it is a law | 4 |
the transmission of the | 4 |
do not know the | 4 |
call attention to the | 4 |
the principle of reversion | 4 |
or constitution of the | 4 |
the leaves of the | 4 |
in its native country | 4 |
borne in mind that | 4 |
of the body and | 4 |
the nature of their | 4 |
of one or two | 4 |
have been subjected to | 4 |
of the whole body | 4 |
factors of organic evolution | 4 |
fixed and variable species | 4 |
the increased size and | 4 |
as affecting domestic productions | 4 |
offspring of the same | 4 |
is all the more | 4 |
in reference to the | 4 |
proper to the parent | 4 |
statements are taken from | 4 |
as we can see | 4 |
of the wild species | 4 |
in the wild state | 4 |
the modification of old | 4 |
in the british museum | 4 |
so that we have | 4 |
distinct plant of the | 4 |
did not produce a | 4 |
of many of the | 4 |
seed in the proportion | 4 |
direct cause of reversion | 4 |
on varieties of the | 4 |
selection of dogs by | 4 |
the male element of | 4 |
in the theory of | 4 |
the secondary sexual characters | 4 |
the authority of mr | 4 |
when crossed with a | 4 |
states that he has | 4 |
of the other species | 4 |
that the useful variations | 4 |
i believe it to | 4 |
of the weeping ash | 4 |
as the period of | 4 |
derived from slight changes | 4 |
elements of the same | 4 |
if it could be | 4 |
we have reason to | 4 |
the conception of species | 4 |
at least in the | 4 |
in the same localities | 4 |
in the inheritance of | 4 |
is the result of | 4 |
weight of the skeleton | 4 |
one from the other | 4 |
the varieties of wheat | 4 |
gone so far as | 4 |
there is no good | 4 |
in an eminent degree | 4 |
as an illustration of | 4 |
shortening of the sternum | 4 |
in such cases the | 4 |
in the flowers of | 4 |
length of the intestines | 4 |
between crossed species and | 4 |
cases are given by | 4 |
the conclusion that the | 4 |
the same species of | 4 |
botanic gardens of edinburgh | 4 |
the imagination of the | 4 |
the two species are | 4 |
as that of a | 4 |
the direct effect of | 4 |
is said not to | 4 |
and especially in the | 4 |
must conclude that the | 4 |
its extinction in porto | 4 |
on the fact that | 4 |
the variations of the | 4 |
that it cannot be | 4 |
apex of the fore | 4 |
of the sternum is | 4 |
an instance of the | 4 |
tendency to reversion to | 4 |
in the processes of | 4 |
adapt themselves to the | 4 |
male and female side | 4 |
we can see that | 4 |
the principle of compensation | 4 |
as we shall hereafter | 4 |
in most of the | 4 |
of the hind wings | 4 |
in part due to | 4 |
tendencies common to both | 4 |
in the difference between | 4 |
elements of the body | 4 |
of the amount of | 4 |
white cats with blue | 4 |
many times in the | 4 |
relations of the two | 4 |
influence of domestication on | 4 |
i am indebted to | 4 |
of two or more | 4 |
there has been no | 4 |
of the minority in | 4 |
are due to the | 4 |
believe that it is | 4 |
we shall find that | 4 |
doctrine of specific centres | 4 |
slight change in the | 4 |
hardly be considered as | 4 |
and it would be | 4 |
differences confined to the | 4 |
is said that the | 4 |
it is not the | 4 |
may be considered as | 4 |
that he believes that | 4 |
american varieties of the | 4 |
it must not be | 4 |
the hotter parts of | 4 |
i shall attempt to | 4 |
in the same locality | 4 |
one sex than the | 4 |
of the first generation | 4 |
in our domestic animals | 4 |
but i have never | 4 |
of various parts of | 4 |
am not aware that | 4 |
crosses between the same | 4 |
under the control of | 4 |
colour of the hair | 4 |
every one knows that | 4 |
in the study of | 4 |
seeding of ordinarily seedless | 4 |
on the path of | 4 |
the order of development | 4 |
of them may be | 4 |
than is usual in | 4 |
of an unusual degree | 4 |
in the third chapter | 4 |
is impossible not to | 4 |
from what we see | 4 |
such be the case | 4 |
is impossible to read | 4 |
of action of the | 4 |
to divergence of character | 4 |
the peculiarities of the | 4 |
the breeds of the | 4 |
as soon as it | 4 |
have been able to | 4 |
and latent in the | 4 |
outward aspect of the | 4 |
assumption of male plumage | 4 |
variations are always present | 4 |
colour of the skin | 4 |
the question of the | 4 |
the cells of the | 4 |
we see in the | 4 |
the same two species | 4 |
with which we are | 4 |
can hardly suppose that | 4 |
in mind that the | 4 |
the sterility of crossed | 4 |
of the central mass | 4 |
analogous facts could be | 4 |
with the development of | 4 |
in the midst of | 4 |
or units of the | 4 |
to the origin of | 4 |
of the wild duck | 4 |
tendency to reversion is | 4 |
the members of a | 4 |
we have to deal | 4 |
or nearly all the | 4 |
be shown to be | 4 |
the organisation or constitution | 4 |
or disuse of parts | 4 |
of gestation in the | 4 |
the effects of changed | 4 |
in animals and plants | 4 |
the use or disuse | 4 |
by a process of | 4 |
rest of the body | 4 |
on the importance of | 4 |
in their natural state | 4 |
there can hardly be | 4 |
the domesticated races of | 4 |
a cross between a | 4 |
to characters derived from | 4 |
be attributed to reversion | 4 |
and one of the | 4 |
fuchsia coccinea and fulgens | 4 |
sex than the other | 4 |
increased use and disuse | 4 |
it may be added | 4 |
the concourse of the | 4 |
or it may be | 4 |
it far from improbable | 4 |
animals of the same | 4 |
the poison of a | 4 |
have shown in a | 4 |
is practically certain that | 4 |
in the strictest sense | 4 |
and the power of | 4 |
are found to be | 4 |
the authority of dr | 4 |
part of this chapter | 4 |
an account of the | 4 |
of a definitely directed | 4 |
being present and visible | 4 |
of wild and tame | 4 |
of the fore wings | 4 |
nearly the same conditions | 4 |
on the principle that | 4 |
correlated with constitutional peculiarities | 4 |
by the direct action | 4 |
from the same flower | 4 |
to be acted upon | 4 |
given in the eleventh | 4 |
in the process of | 4 |
do not doubt that | 4 |
is shown by the | 4 |
the increased use and | 4 |
the theory of evolution | 4 |
the white and yellow | 4 |
in a general sense | 4 |
i see no reason | 4 |
case is that of | 4 |
in a high degree | 4 |
that we have no | 4 |
the head of a | 4 |
the same way as | 4 |
in the university of | 4 |
the hare and rabbit | 4 |
in the same state | 4 |
it is a general | 4 |
the circumstances and conditions | 4 |
the first step in | 4 |
the amount of modification | 4 |
the forms of the | 4 |
a doubt that the | 4 |
that the amount of | 4 |
individual of the same | 4 |
the orifice of the | 4 |
in the way of | 4 |
must be looked at | 4 |
on the belief that | 4 |
the first and second | 4 |
with either pure parent | 4 |
in the preceding pages | 4 |
the botanic gardens of | 4 |
is the cause of | 4 |
than those on the | 4 |
of the transmission of | 4 |
between the same two | 4 |
of dogs by the | 4 |
pollen taken from the | 4 |
the wing and tail | 4 |
of varieties of peas | 4 |
mere heat and cold | 4 |
on the culture of | 4 |
it would be easy | 4 |
it must be conceded | 3 |
of the horse and | 3 |
it would be tedious | 3 |
the foot of the | 3 |
the tendency in the | 3 |
of the old world | 3 |
a change of this | 3 |
the peloric flowers of | 3 |
the head and limbs | 3 |
conditions of life are | 3 |
the rocks of the | 3 |
there is no such | 3 |
exposed during several generations | 3 |
the lifetime of the | 3 |
which have been kept | 3 |
to an extreme degree | 3 |
organisation or constitution of | 3 |
it may be argued | 3 |
should be borne in | 3 |
for it is impossible | 3 |
and disuse are inherited | 3 |
and in some instances | 3 |
any one of the | 3 |
the characters borne by | 3 |
the power to form | 3 |
prolonged during many generations | 3 |
the sterility of species | 3 |
which is to be | 3 |
a greater number of | 3 |
that the two lots | 3 |
the mouth of the | 3 |
it is with numerous | 3 |
ovules and pollen of | 3 |
no means impossible that | 3 |
of the most varied | 3 |
been observed in the | 3 |
given me by mr | 3 |
that there are many | 3 |
with the normal form | 3 |
all these cases the | 3 |
it seems to be | 3 |
consistent with the view | 3 |
or only on the | 3 |
pollen from the same | 3 |
far greater number of | 3 |
of the same blood | 3 |
the other hand the | 3 |
i am not mistaken | 3 |
it has also been | 3 |
selection of the best | 3 |
of the species of | 3 |
multiple and homologous parts | 3 |
by inosculation in the | 3 |
in the sixth chapter | 3 |
the same time so | 3 |
due to reversion to | 3 |
the law of the | 3 |
by way of illustration | 3 |
i saw in the | 3 |
of the soil on | 3 |
chapter it was shown | 3 |
the northern parts of | 3 |
of the personal structure | 3 |
should be confined to | 3 |
the development of certain | 3 |
with many kinds of | 3 |
as we see with | 3 |
cultivation of native plants | 3 |
the fact of its | 3 |
elements or units of | 3 |
the skin of a | 3 |
from each other by | 3 |
of feral horses in | 3 |
on the production of | 3 |
a good instance of | 3 |
to be discussed in | 3 |
the result of an | 3 |
races of the dog | 3 |
if it were possible | 3 |
that the changes in | 3 |
on the accumulative action | 3 |
the process of division | 3 |
been formed by the | 3 |
kept by the indians | 3 |
by pollen of the | 3 |
as showing how the | 3 |
than is the case | 3 |
it may be a | 3 |
the absence of any | 3 |
have been modified in | 3 |
do not know how | 3 |
from each other and | 3 |
in which the characters | 3 |
from that of the | 3 |
is at any rate | 3 |
have an important bearing | 3 |
as we do not | 3 |
on changes in the | 3 |
meeting of complementary factors | 3 |
according to the circumstances | 3 |
are a few of | 3 |
to any change in | 3 |
changes have been effected | 3 |
have an opportunity of | 3 |
be fertilised by pollen | 3 |
form of the comb | 3 |
bear in mind how | 3 |
the period of maturity | 3 |
more than a century | 3 |
two pairs of factors | 3 |
i have seen no | 3 |
of the varieties which | 3 |
two or more closely | 3 |
is little doubt that | 3 |
the several forms of | 3 |
had been cut off | 3 |
improved races of the | 3 |
for the loan of | 3 |
in the womb or | 3 |
characters of all kinds | 3 |
to me probable that | 3 |
the very existence of | 3 |
in the ordinary sense | 3 |
even in the case | 3 |
which is acted on | 3 |
a very large number | 3 |
is highly probable that | 3 |
which are propagated by | 3 |
be formed by the | 3 |
would be an advantage | 3 |
in proportion as they | 3 |
has given me the | 3 |
we can only say | 3 |
for their own wants | 3 |
are apt to be | 3 |
of the kind of | 3 |
animals to breed in | 3 |
may be suspected that | 3 |
will tend to be | 3 |
of the yellow variety | 3 |
lie on the path | 3 |
the formation of domestic | 3 |
in the amount of | 3 |
in madeira than in | 3 |
it may be suspected | 3 |
secondary sexual characters in | 3 |
will be considered in | 3 |
on the head of | 3 |
from the fact of | 3 |
on the use of | 3 |
with advancing age of | 3 |
would appear to have | 3 |
explanation of this fact | 3 |
affinities of the tissues | 3 |
the most important of | 3 |
of the causes of | 3 |
the selection of seed | 3 |
slight deviations of structure | 3 |
from improbable that the | 3 |
of the flowers of | 3 |
plants from changed conditions | 3 |
normally or abnormally are | 3 |
nature of the connexion | 3 |
will not venture to | 3 |
the precise cause of | 3 |
structure of the eye | 3 |
and the formation of | 3 |
explanation of the phenomena | 3 |
the reproductive organs being | 3 |
are the most liable | 3 |
might be argued that | 3 |
to judge how far | 3 |
distinctions between them are | 3 |
domestication of bos longifrons | 3 |
animals kept by savages | 3 |
constitution of the being | 3 |
power of the organisation | 3 |
those which have been | 3 |
on the amount of | 3 |
of the british islands | 3 |
from their first production | 3 |
and in a lesser | 3 |
of the inherited effects | 3 |
it would be well | 3 |
outward conditions of life | 3 |
occur in the same | 3 |
that the distinction is | 3 |
produced three calves which | 3 |
there is little doubt | 3 |
the corresponding parts of | 3 |
of species of verbascum | 3 |
of the utility of | 3 |
an animal or plant | 3 |
are not here concerned | 3 |
of the union of | 3 |
to the direct action | 3 |
may infer that the | 3 |
effect of conditions of | 3 |
come into existence by | 3 |
on the fact of | 3 |
as well as to | 3 |
an extent as to | 3 |
the cumulative inheritance of | 3 |
on the ground of | 3 |
to point out the | 3 |
between the common and | 3 |
the crossed offspring of | 3 |
of eggs laid by | 3 |
land of passage was | 3 |
what is the nature | 3 |
of the lower incisors | 3 |
of the animal kingdom | 3 |
and this shows that | 3 |
to the extent which | 3 |
as to lead to | 3 |
was in any way | 3 |
some reason to believe | 3 |
breeds of sheep to | 3 |
seen in the last | 3 |
at which we have | 3 |
chapters on the pigeon | 3 |
by changed conditions of | 3 |
as correlated with constitutional | 3 |
no such thing as | 3 |
that the conditions of | 3 |
of the blood of | 3 |
hence we may conclude | 3 |
adapted to the surrounding | 3 |
parent in another part | 3 |
far as to maintain | 3 |
living a free life | 3 |
such thing as a | 3 |
spur of a cock | 3 |
those who have studied | 3 |
on the same day | 3 |
those species which have | 3 |
fertilised by the gemmules | 3 |
periosteum of a dog | 3 |
the increased fertility of | 3 |
supernumerary digits in man | 3 |
the formation of our | 3 |
or abnormally are self | 3 |
on the good derived | 3 |
may be in reality | 3 |
of the several forms | 3 |
that if we could | 3 |
of natural or artificial | 3 |
accumulation through natural selection | 3 |
of transmission in crossing | 3 |
in the first chapter | 3 |
which we have just | 3 |
the geographical distribution of | 3 |
grandparents or more remote | 3 |
tuft of feathers on | 3 |
that the distribution of | 3 |
the species belonging to | 3 |
the same species in | 3 |
i have been led | 3 |
part of the offspring | 3 |
in a lesser degree | 3 |
early cultivation of the | 3 |
and in the same | 3 |
thuja pendula or filiformis | 3 |
injury to the embryo | 3 |
on their part to | 3 |
be effected by the | 3 |
which is the most | 3 |
of the definite action | 3 |
or not at all | 3 |
and disuse on the | 3 |
each other by some | 3 |
on the ground that | 3 |
whilst living under their | 3 |
i may mention that | 3 |
and exposure to a | 3 |
parents have been exposed | 3 |
be considered as a | 3 |
crossed with one of | 3 |
by prepotency of transmission | 3 |
influences to which they | 3 |
i am by no | 3 |
found to consist of | 3 |
tendency in man to | 3 |
this stage of growth | 3 |
more or less resemble | 3 |
the former of which | 3 |
that portion of the | 3 |
the most familiar examples | 3 |
as a return to | 3 |
not be forgotten that | 3 |
the influence of domestication | 3 |
as is that of | 3 |
are derived from the | 3 |
reference to the development | 3 |
we may feel sure | 3 |
i hear from dr | 3 |
as well as with | 3 |
supernumerary digits after amputation | 3 |
and the inheritance of | 3 |
in an intermediate condition | 3 |
a small portion of | 3 |
of improving the breed | 3 |
seeds as food in | 3 |
more than in the | 3 |
of selection in enlarging | 3 |
so as to become | 3 |
have been published by | 3 |
in any given case | 3 |
of the highest importance | 3 |
hybrid produced by inosculation | 3 |
on the upper surface | 3 |
of the shape of | 3 |
or both from a | 3 |
of summer and winter | 3 |
nothing to do with | 3 |
to an arrest of | 3 |
on the same subject | 3 |
two outer toes are | 3 |
varieties of the cherry | 3 |
become more and more | 3 |
on the legs of | 3 |
if they had been | 3 |
of a more adaptive | 3 |
the age of the | 3 |
by stripes and blotches | 3 |
and the other parent | 3 |
there is some reason | 3 |
of youatt on the | 3 |
and tear of the | 3 |
soon as it is | 3 |
aid of a factor | 3 |
transmitted from generation to | 3 |
origin of the peach | 3 |
it is much more | 3 |
in a large number | 3 |
and many of the | 3 |
the back of the | 3 |
the following case is | 3 |
that natural selection has | 3 |
the organs of reproduction | 3 |
will be seen that | 3 |
times in the same | 3 |
flowers of both forms | 3 |
am by no means | 3 |
on the skull in | 3 |
the culture of the | 3 |
a few red feathers | 3 |
a certain extent understand | 3 |
from these facts we | 3 |
characters not proper to | 3 |
the influence of external | 3 |
of the facts of | 3 |
origin of varieties of | 3 |
the old and new | 3 |
goes so far as | 3 |
may well be supposed | 3 |
of the orange in | 3 |
theory of natural selection | 3 |
of the japanese cock | 3 |
is true that the | 3 |
distinguished from each other | 3 |
seems at first sight | 3 |
the feathers of the | 3 |
directly or indirectly caused | 3 |
the nervous system in | 3 |
of the same age | 3 |
it would seem to | 3 |
eggs of the fowl | 3 |
hereditary affections of the | 3 |
through the medium of | 3 |
variation in the vine | 3 |
in our domestic races | 3 |
which may be called | 3 |
exception to the rule | 3 |
under a physiological point | 3 |
a much more important | 3 |
youatt on the pig | 3 |
the alleged inheritance of | 3 |
i have never heard | 3 |
created expressly for itself | 3 |
analogous or parallel varieties | 3 |
the selection of individuals | 3 |
is consistent with the | 3 |
of the same class | 3 |
or any other cause | 3 |
effects of selection in | 3 |
to have been a | 3 |
head and the extremities | 3 |
the appearance of any | 3 |
male upon the subsequent | 3 |
selection is that which | 3 |
flowers and seedless fruit | 3 |
instances have been given | 3 |
a theory of evolution | 3 |
at the college of | 3 |
the course of their | 3 |
considerations opposed to the | 3 |
the peculiarity in question | 3 |
it will be shown | 3 |
all ordinary cases of | 3 |
in the organic world | 3 |
races are not formed | 3 |
animals and plants has | 3 |
in a somewhat similar | 3 |