This is a table of type trigram and their frequencies. Use it to search & browse the list to learn more about your study carrel.
trigram | frequency |
---|---|
of the same | 258 |
in the same | 205 |
the case of | 164 |
conditions of life | 147 |
varieties of the | 144 |
on the other | 139 |
in the case | 137 |
with respect to | 127 |
the other hand | 125 |
animals and plants | 122 |
the effects of | 121 |
in which the | 119 |
one of the | 115 |
the nature of | 109 |
of the body | 103 |
the fact that | 102 |
more or less | 99 |
it may be | 98 |
that it is | 98 |
it is not | 92 |
some of the | 92 |
that of the | 88 |
nature of the | 85 |
there is no | 83 |
the same species | 80 |
as in the | 79 |
it has been | 79 |
parts of the | 78 |
the development of | 76 |
and in the | 76 |
of the two | 74 |
development of the | 73 |
as to the | 73 |
as well as | 71 |
on the same | 68 |
it would be | 68 |
part of the | 68 |
the same manner | 66 |
due to the | 65 |
the conditions of | 64 |
which have been | 64 |
case of the | 64 |
the power of | 63 |
from each other | 60 |
we have seen | 60 |
as far as | 59 |
to a certain | 59 |
and it is | 59 |
that there is | 59 |
i do not | 58 |
use and disuse | 58 |
at the same | 56 |
the appearance of | 56 |
the production of | 56 |
respect to the | 56 |
the inheritance of | 56 |
and of the | 55 |
that in the | 55 |
a state of | 55 |
change in the | 54 |
the result of | 54 |
variety of the | 54 |
the principle of | 53 |
effects of use | 53 |
origin of the | 53 |
the pollen of | 52 |
the number of | 52 |
to the same | 52 |
a certain extent | 51 |
it is a | 51 |
so far as | 51 |
which i have | 50 |
the course of | 49 |
there can be | 49 |
but it is | 48 |
members of the | 48 |
of the most | 48 |
of animals and | 48 |
the varieties of | 46 |
the origin of | 46 |
that they are | 46 |
the action of | 46 |
it will be | 46 |
the existence of | 45 |
to believe that | 45 |
action of the | 45 |
of natural selection | 44 |
in regard to | 44 |
in some cases | 44 |
in this case | 44 |
there is a | 44 |
of the wings | 44 |
in the course | 44 |
of use and | 43 |
the colour of | 43 |
colour of the | 42 |
by no means | 42 |
is to be | 42 |
in the first | 42 |
the formation of | 42 |
on the whole | 41 |
as i have | 41 |
do not know | 40 |
the zoological gardens | 40 |
individuals of the | 40 |
in a state | 40 |
of the species | 40 |
of the other | 40 |
must have been | 39 |
changes in the | 39 |
the theory of | 39 |
the same time | 39 |
so that the | 39 |
state of nature | 39 |
to be the | 39 |
variation in the | 39 |
given in the | 39 |
be regarded as | 38 |
on the contrary | 38 |
fact that the | 38 |
that this is | 38 |
and on the | 38 |
can be no | 37 |
informs me that | 37 |
many of the | 37 |
those of the | 37 |
derived from the | 37 |
in the zoological | 36 |
of the dog | 36 |
they have been | 36 |
to suppose that | 36 |
which has been | 36 |
the case with | 36 |
in the other | 36 |
from the same | 35 |
by natural selection | 35 |
which we have | 35 |
their own pollen | 35 |
such as the | 35 |
large number of | 35 |
the offspring of | 35 |
the distribution of | 35 |
reason to believe | 35 |
a distinct species | 35 |
as we shall | 34 |
the tendency to | 34 |
it is in | 34 |
the crossing of | 34 |
a variety of | 34 |
the effect of | 34 |
seen in the | 34 |
might have been | 34 |
so it is | 33 |
have been observed | 33 |
this is the | 33 |
nearly the same | 33 |
which it is | 33 |
is well known | 33 |
to which the | 33 |
size of the | 33 |
the reproductive organs | 32 |
of this kind | 32 |
it is impossible | 32 |
we do not | 32 |
the transmission of | 32 |
form of the | 32 |
to be a | 32 |
but in the | 32 |
our domesticated animals | 32 |
a series of | 32 |
is due to | 32 |
of varieties of | 32 |
to have been | 32 |
the members of | 32 |
may have been | 31 |
we know that | 31 |
it must be | 31 |
species of the | 31 |
two or three | 31 |
length of the | 31 |
the shape of | 31 |
of changed conditions | 31 |
they may be | 31 |
of the insect | 31 |
and that the | 31 |
believe that the | 31 |
which they are | 31 |
and i have | 31 |
have seen that | 30 |
on this subject | 30 |
of the wild | 30 |
changed conditions of | 30 |
the selection of | 30 |
to which they | 30 |
they do not | 30 |
in spite of | 30 |
between the two | 30 |
regard to the | 30 |
the two forms | 30 |
in these cases | 29 |
side of the | 29 |
as it is | 29 |
to show that | 29 |
breeds of the | 29 |
be no doubt | 29 |
will be found | 29 |
of the fowl | 29 |
as it were | 29 |
in porto santo | 29 |
the belief that | 29 |
in the conditions | 29 |
shown in the | 29 |
in the last | 29 |
a large number | 29 |
male and female | 28 |
the amount of | 28 |
the absence of | 28 |
than in the | 28 |
of the several | 28 |
of the genus | 28 |
the sterility of | 28 |
reference to the | 28 |
and the other | 28 |
effects of disuse | 28 |
the aid of | 28 |
difference in the | 28 |
the study of | 27 |
history of the | 27 |
the problem of | 27 |
have not been | 27 |
by which the | 27 |
of the effects | 27 |
of such a | 27 |
the direction of | 27 |
the period of | 27 |
cases in which | 27 |
the fact of | 27 |
account for the | 27 |
the influence of | 27 |
in the offspring | 27 |
at any rate | 27 |
the same family | 26 |
independently of the | 26 |
the present day | 26 |
the fertility of | 26 |
in all cases | 26 |
with their own | 26 |
which can be | 26 |
it is with | 26 |
plants under domestication | 26 |
would have been | 26 |
be due to | 26 |
and plants under | 26 |
the size of | 26 |
to each other | 26 |
it is probable | 26 |
we have no | 26 |
fertility of the | 26 |
the structure of | 26 |
no doubt that | 26 |
seems to me | 26 |
the act of | 26 |
character of the | 26 |
of acquired characters | 26 |
sides of the | 26 |
most of the | 25 |
variation of animals | 25 |
be attributed to | 25 |
of all the | 25 |
effects of the | 25 |
according to the | 25 |
is the case | 25 |
is difficult to | 25 |
seems to be | 25 |
of the offspring | 25 |
out of the | 25 |
state of the | 25 |
and in some | 25 |
as with the | 25 |
differences in the | 25 |
with that of | 25 |
as we have | 25 |
it is well | 25 |
as regards the | 25 |
the reproductive system | 25 |
could be given | 25 |
same manner as | 24 |
prepotency of transmission | 24 |
for the most | 24 |
its own pollen | 24 |
so as to | 24 |
sterility of the | 24 |
in which they | 24 |
of close interbreeding | 24 |
have been exposed | 24 |
inheritance of the | 24 |
is one of | 24 |
account of the | 24 |
a matter of | 24 |
of a distinct | 24 |
and by the | 24 |
i have seen | 24 |
it is difficult | 24 |
the process of | 24 |
a consequence of | 24 |
the same individual | 24 |
appear to be | 24 |
number of the | 24 |
of the whole | 24 |
greater or less | 24 |
of the world | 24 |
it is the | 24 |
can hardly be | 24 |
which had been | 24 |
a cause of | 24 |
the phenomena of | 24 |
far as i | 24 |
is impossible to | 24 |
as they are | 23 |
the character of | 23 |
in many cases | 23 |
it is possible | 23 |
selection of the | 23 |
which they have | 23 |
we shall see | 23 |
in most cases | 23 |
the length of | 23 |
the forms of | 23 |
with each other | 23 |
but this is | 23 |
the wings of | 23 |
as soon as | 23 |
variations in the | 23 |
direct action of | 23 |
gemmules derived from | 23 |
at the present | 23 |
the law of | 23 |
in the following | 23 |
the species of | 23 |
the growth of | 23 |
the union of | 23 |
shape of the | 23 |
that there are | 23 |
said to be | 23 |
structure of the | 23 |
but there is | 23 |
i have been | 23 |
would seem to | 23 |
secondary sexual characters | 23 |
in accordance with | 23 |
in comparison with | 23 |
consequence of the | 23 |
it is that | 23 |
that we have | 22 |
me that he | 22 |
to vary in | 22 |
in other words | 22 |
when crossed with | 22 |
a long series | 22 |
at first sight | 22 |
during many generations | 22 |
point of view | 22 |
the most part | 22 |
is that of | 22 |
the cause of | 22 |
the higher animals | 22 |
be the case | 22 |
some of these | 22 |
fertilised by the | 22 |
by the pollen | 22 |
supposed to be | 22 |
seem to be | 22 |
of which the | 22 |
the male element | 22 |
each other in | 22 |
which we are | 22 |
which are not | 22 |
long series of | 22 |
that natural selection | 22 |
the organs of | 22 |
of the various | 22 |
from a cross | 22 |
the results of | 21 |
in a future | 21 |
the individuals of | 21 |
portion of the | 21 |
liable to be | 21 |
the breeding of | 21 |
the sexual elements | 21 |
only in the | 21 |
on the subject | 21 |
of the common | 21 |
during a long | 21 |
of a single | 21 |
of the organic | 21 |
the evil effects | 21 |
that they have | 21 |
breeds of cattle | 21 |
probable that the | 21 |
of the reproductive | 21 |
which may be | 21 |
a tendency to | 21 |
even in the | 21 |
unaffected by climate | 21 |
the difference in | 21 |
is that the | 21 |
no less than | 21 |
ought to be | 21 |
it is to | 21 |
with the same | 21 |
we must not | 20 |
of the male | 20 |
i believe that | 20 |
shown by the | 20 |
it is certain | 20 |
of living things | 20 |
of the conditions | 20 |
more and more | 20 |
i have already | 20 |
in their native | 20 |
in support of | 20 |
of the first | 20 |
well known to | 20 |
a number of | 20 |
the whole body | 20 |
as that of | 20 |
the insect tribes | 20 |
of the wing | 20 |
found in the | 20 |
in the second | 20 |
conditions to which | 20 |
the difference between | 20 |
the form of | 20 |
doubt that the | 20 |
could not have | 20 |
accounted for by | 20 |
they are not | 20 |
not have been | 20 |
in any way | 20 |
the importance of | 20 |
a multitude of | 20 |
of the horse | 20 |
that the two | 20 |
there are many | 20 |
tendency to reversion | 20 |
in the present | 20 |
the variability of | 20 |
more than a | 20 |
the characters of | 20 |
origin of species | 20 |
in the parent | 20 |
or of the | 20 |
in a few | 19 |
theory of selection | 19 |
in other cases | 19 |
of breeds of | 19 |
are to be | 19 |
in north america | 19 |
of all kinds | 19 |
in order to | 19 |
use or disuse | 19 |
and this is | 19 |
is not the | 19 |
the state of | 19 |
the direct action | 19 |
distribution of the | 19 |
be accounted for | 19 |
exactly the same | 19 |
from the first | 19 |
this is a | 19 |
condition of the | 19 |
the west indies | 19 |
has often been | 19 |
no reason to | 19 |
we may infer | 19 |
in some degree | 19 |
that is to | 19 |
not to be | 19 |
habits of life | 19 |
is probable that | 19 |
it should be | 19 |
we may conclude | 19 |
is certain that | 19 |
varieties of wheat | 19 |
that all the | 19 |
difference between the | 19 |
it does not | 19 |
from a common | 19 |
the subject of | 19 |
of the pigeon | 19 |
the doctrine of | 19 |
slight changes in | 19 |
i am not | 19 |
through natural selection | 19 |
that he has | 19 |
from changed conditions | 18 |
in the horse | 18 |
of the plant | 18 |
it is said | 18 |
known to be | 18 |
has been observed | 18 |
cause of the | 18 |
we have already | 18 |
i may add | 18 |
affected by the | 18 |
by the same | 18 |
the two species | 18 |
evil effects of | 18 |
case of a | 18 |
vary in the | 18 |
case with the | 18 |
of the peach | 18 |
definite action of | 18 |
to account for | 18 |
pollen of a | 18 |
apterous in madeira | 18 |
or in the | 18 |
constitution of the | 18 |
the view that | 18 |
well as the | 18 |
as due to | 18 |
in the germ | 18 |
the same flower | 18 |
the loss of | 18 |
from a distinct | 18 |
the presence of | 18 |
in the individual | 18 |
a change of | 18 |
of the eye | 18 |
be considered as | 18 |
found to be | 18 |
in this respect | 18 |
would not be | 18 |
have been recorded | 18 |
a future chapter | 18 |
appears to be | 18 |
brought about by | 18 |
but i have | 18 |
the last chapter | 18 |
the same plant | 18 |
the madeira islands | 18 |
depends on the | 18 |
the same variety | 18 |
caused by the | 18 |
we see that | 18 |
surface of the | 18 |
various parts of | 18 |
at corresponding periods | 18 |
and in this | 18 |
one of these | 17 |
a few of | 17 |
been exposed to | 17 |
by the fact | 17 |
in the one | 17 |
the end of | 17 |
be fertilised by | 17 |
there must be | 17 |
tierra del fuego | 17 |
i have not | 17 |
inherited effects of | 17 |
more than one | 17 |
the history of | 17 |
the constitution of | 17 |
of the nature | 17 |
in the third | 17 |
principle of selection | 17 |
into each other | 17 |
in the most | 17 |
the causes of | 17 |
act of crossing | 17 |
the reappearance of | 17 |
of the three | 17 |
produced by the | 17 |
we are led | 17 |
due to reversion | 17 |
the time of | 17 |
growth of the | 17 |
in south america | 17 |
a host of | 17 |
in such cases | 17 |
are due to | 17 |
to be found | 17 |
in such a | 17 |
with pollen from | 17 |
of the parts | 17 |
those which have | 17 |
to the fact | 17 |
the male and | 17 |
in the genus | 17 |
breeds of sheep | 17 |
as a consequence | 17 |
is to say | 17 |
seen that the | 17 |
of the more | 17 |
domesticated animals and | 17 |
are liable to | 17 |
in madeira proper | 17 |
of the lower | 17 |
in the chapter | 17 |
of a species | 17 |
by their own | 17 |
and they are | 17 |
study of the | 17 |
of species of | 17 |
the assumption of | 17 |
different parts of | 17 |
on account of | 17 |
in the two | 17 |
we see the | 16 |
been known to | 16 |
of which are | 16 |
is not so | 16 |
that in a | 16 |
formed by the | 16 |
far as the | 16 |
crossing of varieties | 16 |
in all probability | 16 |
relatively to the | 16 |
in a large | 16 |
in the west | 16 |
species when crossed | 16 |
any of the | 16 |
a greater or | 16 |
at an early | 16 |
the position of | 16 |
shown to be | 16 |
of the domestic | 16 |
have seen in | 16 |
is by no | 16 |
weight of the | 16 |
not in the | 16 |
of the group | 16 |
a case of | 16 |
on the nature | 16 |
of homologous parts | 16 |
if it were | 16 |
the occurrence of | 16 |
in which it | 16 |
that we are | 16 |
i have never | 16 |
connected with the | 16 |
to which i | 16 |
show that the | 16 |
of the madeiran | 16 |
those who have | 16 |
cases have been | 16 |
that of a | 16 |
of north america | 16 |
the application of | 16 |
of the facts | 16 |
be found to | 16 |
the distinction between | 16 |
differ from each | 16 |
the madeiran group | 16 |
the conclusion that | 16 |
length of time | 16 |
of the germ | 16 |
of change of | 16 |
the definite action | 16 |
elements of the | 16 |
of the flowers | 16 |
variations of the | 16 |
is said to | 16 |
for it is | 16 |
from the other | 16 |
disuse of parts | 16 |
the same character | 16 |
may conclude that | 16 |
as a matter | 16 |
together with the | 16 |
as a whole | 16 |
the flowers of | 16 |
the degree of | 16 |
the united states | 16 |
in some of | 16 |
it seems to | 16 |
on the one | 16 |
little doubt that | 16 |
of the characters | 15 |
greater number of | 15 |
a cross between | 15 |
in one of | 15 |
closely allied species | 15 |
we have the | 15 |
has not been | 15 |
in the light | 15 |
as we see | 15 |
the organic world | 15 |
which is not | 15 |
change of soil | 15 |
in mind that | 15 |
that they were | 15 |
especially in the | 15 |
this may be | 15 |
a change in | 15 |
the whole of | 15 |
to the offspring | 15 |
in relation to | 15 |
is not a | 15 |
of the organism | 15 |
shows that the | 15 |
has been found | 15 |
from the fact | 15 |
may be a | 15 |
of any other | 15 |
the crossed offspring | 15 |
of transmission in | 15 |
in some instances | 15 |
found that the | 15 |
are supposed to | 15 |
characters of the | 15 |
the north of | 15 |
we may feel | 15 |
when we reflect | 15 |
the first generation | 15 |
a form of | 15 |
only on the | 15 |
as shown by | 15 |
the swiss lake | 15 |
arrest of development | 15 |
knowledge of the | 15 |
the power to | 15 |
deviations of structure | 15 |
facts have been | 15 |
we have been | 15 |
of the higher | 15 |
amount of difference | 15 |
well known that | 15 |
this is an | 15 |
males and females | 15 |
have to be | 15 |
appearance of the | 15 |
in the several | 15 |
of the apple | 15 |
that they would | 15 |
on one of | 15 |
to which we | 15 |
would be a | 15 |
which in the | 15 |
it can be | 15 |
by means of | 15 |
by the conditions | 15 |
may perhaps be | 15 |
which is the | 15 |
suppose that the | 15 |
one of them | 15 |
the question of | 15 |
the use of | 15 |
some degree of | 15 |
the same nature | 15 |
the same principle | 15 |
is in the | 15 |
action of changed | 15 |
on the development | 15 |
in all the | 15 |
cells of the | 15 |
leads to the | 15 |
the rest of | 15 |
the light of | 15 |
right and left | 15 |
accordance with the | 15 |
of the organisation | 15 |
the work of | 15 |
as i am | 15 |
i have heard | 15 |
may not be | 15 |
the reproductive elements | 15 |
than any other | 15 |
our own country | 15 |
as to be | 15 |
effects of close | 15 |
are led to | 14 |
of the latter | 14 |
periods of life | 14 |
we can hardly | 14 |
in some few | 14 |
occur in the | 14 |
in the earlier | 14 |
to be of | 14 |
which it has | 14 |
number of individuals | 14 |
with a distinct | 14 |
may be due | 14 |
like those of | 14 |
taken from the | 14 |
explanation of the | 14 |
theory of evolution | 14 |
on the effects | 14 |
at least in | 14 |
bear in mind | 14 |
only a few | 14 |
inheritance of acquired | 14 |
offspring of the | 14 |
of the great | 14 |
in the higher | 14 |
the inherited effects | 14 |
of the phenomena | 14 |
derived from a | 14 |
the falkland islands | 14 |
been observed in | 14 |
natural or artificial | 14 |
there is some | 14 |
of colour in | 14 |
of the parent | 14 |
in the direction | 14 |
transmission of acquired | 14 |
lead to the | 14 |
be able to | 14 |
we have a | 14 |
the differences between | 14 |
this is not | 14 |
whether or not | 14 |
in the animal | 14 |
effects of crossing | 14 |
conclude that the | 14 |
of the female | 14 |
and from the | 14 |
it would appear | 14 |
the eggs of | 14 |
of distinct species | 14 |
vast number of | 14 |
of our domesticated | 14 |
the cases of | 14 |
it is only | 14 |
breeds of pigeons | 14 |
it is notorious | 14 |
the control of | 14 |
exposed to the | 14 |
stage of development | 14 |
flowers of the | 14 |
in breeds of | 14 |
the mode of | 14 |
of the varieties | 14 |
summary of the | 14 |
is no reason | 14 |
as long as | 14 |
two or more | 14 |
has shown that | 14 |
proper to the | 14 |
cultivation of the | 14 |
during several generations | 14 |
of character in | 14 |
opposite sides of | 14 |
corresponding periods of | 14 |
on this head | 14 |
shall see in | 14 |
or at least | 14 |
are descended from | 14 |
of the mother | 14 |
the authority of | 14 |
to which it | 14 |
in like manner | 14 |
and the same | 14 |
see in the | 14 |
breeding in captivity | 14 |
they have not | 14 |
are said to | 14 |
to be inherited | 13 |
are capable of | 13 |
of the head | 13 |
the same result | 13 |
we need not | 13 |
the chapter on | 13 |
the island of | 13 |
of the normal | 13 |
the facts of | 13 |
rest of the | 13 |
pollen of the | 13 |
degree of sterility | 13 |
there would be | 13 |
the same country | 13 |
to the action | 13 |
than the other | 13 |
proportion of the | 13 |
of the individual | 13 |
are able to | 13 |
the head and | 13 |
a large proportion | 13 |
effects of natural | 13 |
period of gestation | 13 |
struggle for existence | 13 |
the good effects | 13 |
inheritance at corresponding | 13 |
more than the | 13 |
it as a | 13 |
dimorphic and trimorphic | 13 |
a much more | 13 |
in order that | 13 |
of one species | 13 |
with the exception | 13 |
to breed in | 13 |
that we can | 13 |
that the species | 13 |
with which the | 13 |
it is an | 13 |
of the flower | 13 |
cattle and sheep | 13 |
that it may | 13 |
propagated by buds | 13 |
youatt on sheep | 13 |
than it is | 13 |
in favour of | 13 |
on the authority | 13 |
when fertilised by | 13 |
which do not | 13 |
when we consider | 13 |
the same age | 13 |
as the result | 13 |
or of a | 13 |
in the number | 13 |
and so forth | 13 |
as one of | 13 |
appearance of a | 13 |
one or two | 13 |
of the kind | 13 |
manner in which | 13 |
of the inheritance | 13 |
number of eggs | 13 |
the conditions to | 13 |
be seen in | 13 |
breeds of fowls | 13 |
and there is | 13 |
states that the | 13 |
view of the | 13 |
be supposed to | 13 |
of the part | 13 |
different kinds of | 13 |
species which are | 13 |
every one knows | 13 |
is not in | 13 |
in the latter | 13 |
would tend to | 13 |
on which the | 13 |
up to the | 13 |
we can see | 13 |
period of life | 13 |
here we have | 13 |
of the present | 13 |
been able to | 13 |
without the aid | 13 |
a very different | 13 |
division of the | 13 |
its concentration in | 13 |
which are so | 13 |
in the lower | 13 |
each other and | 13 |
attention to the | 13 |
shall presently see | 13 |
we shall presently | 13 |
the line of | 13 |
look at the | 13 |
on the breeding | 13 |
as i can | 13 |
the two sexes | 13 |
and we have | 13 |
cattle of the | 13 |
the colours of | 13 |
it is true | 13 |
a distinct plant | 13 |
regarded as a | 13 |
none of the | 13 |
large proportion of | 13 |
plants of the | 13 |
in different parts | 13 |
a vast number | 13 |
portions of the | 13 |
of this fact | 13 |
end of the | 13 |
of them are | 13 |
and that of | 13 |
be found in | 13 |
but it may | 13 |
not due to | 12 |
it is clear | 12 |
of transmission of | 12 |
the evidence is | 12 |
during many years | 12 |
fertilised by their | 12 |
tendency to the | 12 |
forms which are | 12 |
on the legs | 12 |
is far from | 12 |
proved to be | 12 |
is a more | 12 |
may be the | 12 |
due to a | 12 |
the same direction | 12 |
their natural conditions | 12 |
all parts of | 12 |
in one instance | 12 |
is possible that | 12 |
in the cases | 12 |
is not surprising | 12 |
is the most | 12 |
the size and | 12 |
fact that in | 12 |
it to be | 12 |
opposed to the | 12 |
know that the | 12 |
races of the | 12 |
me by mr | 12 |
of the process | 12 |
and so it | 12 |
of the subject | 12 |
the behaviour of | 12 |
this case the | 12 |
in the north | 12 |
a part of | 12 |
descent of man | 12 |
of our own | 12 |
of good hope | 12 |
to prove that | 12 |
direction of the | 12 |
i think it | 12 |
of the family | 12 |
from those of | 12 |
we find that | 12 |
and with the | 12 |
but we must | 12 |
crossing of distinct | 12 |
have been modified | 12 |
of parts in | 12 |
to be transmitted | 12 |
i will not | 12 |
is clear that | 12 |
the animal kingdom | 12 |
production of a | 12 |
to make a | 12 |
the possibility of | 12 |
forms of life | 12 |
but they are | 12 |
the one hand | 12 |
the age of | 12 |
few of the | 12 |
selection by man | 12 |
rarely or never | 12 |
it appears that | 12 |
influence of the | 12 |
the distinctions between | 12 |
or less sterile | 12 |
that which is | 12 |
that in some | 12 |
of a plant | 12 |
far as we | 12 |
several of the | 12 |
it might have | 12 |
laeta and velutina | 12 |
to this subject | 12 |
could not be | 12 |
domestication of the | 12 |
we should be | 12 |
of the plum | 12 |
effect on the | 12 |
the parts of | 12 |
does not necessarily | 12 |
and cultivated plants | 12 |
the sake of | 12 |
from the facts | 12 |
the most striking | 12 |
it was shown | 12 |
may be said | 12 |
in size and | 12 |
of a more | 12 |
an arrest of | 12 |
have never been | 12 |
in the normal | 12 |
of one of | 12 |
all organic beings | 12 |
there are two | 12 |
those on the | 12 |
of the case | 12 |
with those of | 12 |
characters derived from | 12 |
the most important | 12 |
the same thing | 12 |
the variation of | 12 |
is with the | 12 |
of the best | 12 |
with pollen of | 12 |
the attacks of | 12 |
been subjected to | 12 |
in the pig | 12 |
direction of variation | 12 |
yet it is | 12 |
both of which | 12 |
on each other | 12 |
taken from a | 12 |
reflect on the | 12 |
been observed with | 12 |
in which a | 12 |
can be produced | 12 |
in the south | 12 |
of the principle | 12 |
change of climate | 12 |
of the old | 12 |
in certain cases | 12 |
cape of good | 12 |
of the madeira | 12 |
on the origin | 12 |
survival of the | 12 |
the explanation of | 12 |
of this nature | 12 |
of the central | 12 |
their concentration in | 12 |
and we may | 12 |
the cultivation of | 12 |
of the soil | 12 |
of soil to | 12 |
flowers on the | 12 |
part in the | 12 |
modifications of structure | 12 |
has been made | 12 |
of a new | 12 |
intermediate in character | 12 |
in a former | 12 |
a general rule | 12 |
continued close interbreeding | 12 |
is said that | 12 |
may well be | 12 |
the necessity of | 12 |
of the general | 12 |
for the sake | 12 |
be said to | 12 |
state of things | 12 |
the limits of | 12 |
to me by | 12 |
and trimorphic plants | 12 |
of the animal | 12 |
to the conclusion | 12 |
them to be | 12 |
which has a | 12 |
animals and cultivated | 11 |
as is well | 11 |
but on the | 11 |
the greater number | 11 |
in the vegetable | 11 |
see that the | 11 |
have been expected | 11 |
a common progenitor | 11 |
like that of | 11 |
feathers of the | 11 |
of the last | 11 |
have been long | 11 |
as a cause | 11 |
i hear from | 11 |
can only be | 11 |
the consequences of | 11 |
has been recorded | 11 |
that i have | 11 |
they would be | 11 |
the useful variations | 11 |
sterility of hybrids | 11 |
in most of | 11 |
there is not | 11 |
the same general | 11 |
have been made | 11 |
will have been | 11 |
in nearly the | 11 |
when they are | 11 |
descended from the | 11 |
hence it is | 11 |
not in any | 11 |
tend to be | 11 |
it is scarcely | 11 |
isidore geoffroy st | 11 |
the elements of | 11 |
of the young | 11 |
instance of the | 11 |
the earlier chapters | 11 |
pollen taken from | 11 |
throughout the body | 11 |
to the nature | 11 |
to say that | 11 |
the last century | 11 |
the various forms | 11 |
pigs of the | 11 |
there is an | 11 |
with the common | 11 |
result of the | 11 |
from close interbreeding | 11 |
to be more | 11 |
from what we | 11 |
it is almost | 11 |
about per cent | 11 |
to be given | 11 |
the other parent | 11 |
in the fact | 11 |
in the least | 11 |
that it has | 11 |
by changed conditions | 11 |
an account of | 11 |
the weight of | 11 |
certain that the | 11 |
power of selection | 11 |
their power of | 11 |
present in the | 11 |
nearly all the | 11 |
feathers on the | 11 |
attributed to the | 11 |
and so on | 11 |
for in the | 11 |
to form a | 11 |
the two types | 11 |
the stigma of | 11 |
and we are | 11 |
that the crossing | 11 |
instead of being | 11 |
the south of | 11 |
of the pig | 11 |
in each generation | 11 |
a result of | 11 |
of the parents | 11 |
in addition to | 11 |
principle of inheritance | 11 |
the seed of | 11 |
position of the | 11 |
absence of the | 11 |
as we know | 11 |
in this manner | 11 |
the fixity of | 11 |
causes of variation | 11 |
which does not | 11 |
i am aware | 11 |
two kinds of | 11 |
the cape of | 11 |
of the theory | 11 |
of the change | 11 |
in the fourth | 11 |
of the potato | 11 |
pallid hue of | 11 |
on the female | 11 |
the exception of | 11 |
so that they | 11 |
the struggle for | 11 |
it might be | 11 |
the most remarkable | 11 |
of the appearance | 11 |
of organic beings | 11 |
to the present | 11 |
because it is | 11 |
we have also | 11 |
of selection in | 11 |
for the production | 11 |
would appear to | 11 |
on the principle | 11 |
there is much | 11 |
is known to | 11 |
with its own | 11 |
and that it | 11 |
by the male | 11 |
account of their | 11 |
kept in the | 11 |
to the development | 11 |
bearing on the | 11 |
the summit of | 11 |
to reversion to | 11 |
so much as | 11 |
we must believe | 11 |
forms of the | 11 |
it is evident | 11 |
course of time | 11 |
analogous facts have | 11 |
by the aid | 11 |
may add that | 11 |
in the formation | 11 |
if we are | 11 |
such cases as | 11 |
as we can | 11 |
the same way | 11 |
was shown in | 11 |
remarks on this | 11 |
varieties of maize | 11 |
the increased size | 11 |
and to the | 11 |
the name of | 11 |
by the union | 11 |
but that the | 11 |
of the orange | 11 |
may infer that | 11 |
would not have | 11 |
study of variation | 11 |
relation to the | 11 |
the following cases | 11 |
the breeds of | 11 |
it would seem | 10 |
with the pollen | 10 |
to the normal | 10 |
the evolution of | 10 |
our present subject | 10 |
and as the | 10 |
it cannot be | 10 |
the descendants of | 10 |
their peculiarity to | 10 |
of hybrids of | 10 |
how it is | 10 |
been brought about | 10 |
determined by the | 10 |
that the black | 10 |
varieties and species | 10 |
evidence of this | 10 |
de la soc | 10 |
that the great | 10 |
change in their | 10 |
is liable to | 10 |
which must be | 10 |
of crossing in | 10 |
the same sex | 10 |
and the whole | 10 |
i am informed | 10 |
seed of the | 10 |
and of a | 10 |
after having been | 10 |
at a very | 10 |
law of nature | 10 |
appearance of new | 10 |
at the end | 10 |
the hypothesis of | 10 |
experiments on the | 10 |
of the human | 10 |
of the many | 10 |
in the wild | 10 |
hypothesis of pangenesis | 10 |
principle of the | 10 |
refer to the | 10 |
found in a | 10 |
a case in | 10 |
some few cases | 10 |
perhaps the most | 10 |
or disuse of | 10 |
by its own | 10 |
the neighbourhood of | 10 |
of those who | 10 |
common to madeira | 10 |
the two parent | 10 |
are much more | 10 |
of the problem | 10 |
of the evidence | 10 |
it is by | 10 |
we shall hereafter | 10 |
if we could | 10 |
their native country | 10 |
the nervous system | 10 |
madeira and sicily | 10 |
at first appears | 10 |
and plants which | 10 |
to the original | 10 |
the change in | 10 |
no one can | 10 |
many of them | 10 |
their conditions of | 10 |
from which they | 10 |
the introduction of | 10 |
led to the | 10 |
of porto santo | 10 |
in reference to | 10 |
of the feet | 10 |
of these forms | 10 |
a difference in | 10 |
the crossed plants | 10 |
being able to | 10 |
as is the | 10 |
of the leaves | 10 |
confined to the | 10 |
of the population | 10 |
the hind wing | 10 |
so that in | 10 |
of the black | 10 |
he states that | 10 |
are more or | 10 |
but i do | 10 |
of the types | 10 |
several varieties of | 10 |
of these two | 10 |
on the right | 10 |
on the conditions | 10 |
on the fertility | 10 |
part or organ | 10 |
would be the | 10 |
no one has | 10 |
an early period | 10 |
of selection on | 10 |
of the zero | 10 |
of sterility in | 10 |
speaking of the | 10 |
are of course | 10 |
in this latter | 10 |
in the next | 10 |
two distinct states | 10 |
for their own | 10 |
the seeds of | 10 |
effect of the | 10 |
not surprising that | 10 |
not at all | 10 |
raised from seed | 10 |
the same as | 10 |
difficult to understand | 10 |
states that he | 10 |
and that in | 10 |
for a long | 10 |
in every case | 10 |
is derived from | 10 |
the base of | 10 |
the same conditions | 10 |
independence of the | 10 |
be supposed that | 10 |
and in many | 10 |
communicated to me | 10 |
or artificial selection | 10 |
the foregoing cases | 10 |
our domesticated productions | 10 |
that the effects | 10 |
an instance of | 10 |
is reason to | 10 |
heat and cold | 10 |
in the colour | 10 |
are taken from | 10 |
one or both | 10 |
of seeds in | 10 |
of the hair | 10 |
of characters in | 10 |
we see in | 10 |
a former chapter | 10 |
but when we | 10 |
selection in the | 10 |
be taken to | 10 |
in one case | 10 |
the force of | 10 |
the same side | 10 |
development of a | 10 |
have long been | 10 |
scarcely possible to | 10 |
the lower animals | 10 |
come into action | 10 |
me that the | 10 |
cases could be | 10 |
that some of | 10 |
of the fittest | 10 |
the hind wings | 10 |
breeding of the | 10 |
acted on by | 10 |
with reference to | 10 |
crossed with the | 10 |
of a large | 10 |
there are several | 10 |
the leaves of | 10 |
that in all | 10 |
remarks that the | 10 |
but we have | 10 |
in respect of | 10 |
in these respects | 10 |
to the inheritance | 10 |
above the sea | 10 |
on the summit | 10 |
the proportion of | 10 |
say that the | 10 |
which are now | 10 |
economy of growth | 10 |
of germinal selection | 10 |
at a corresponding | 10 |
pollen from a | 10 |
the significance of | 10 |
seeds of the | 10 |
of the beak | 10 |
assumption of male | 10 |
far as to | 10 |
from which the | 10 |
of the word | 10 |
so long as | 10 |
by the nature | 10 |
with regard to | 10 |
that it was | 10 |
be little doubt | 10 |
the variations of | 10 |
what we see | 10 |
early period of | 10 |
i believe it | 10 |
states that in | 10 |
a breed of | 10 |
of which is | 10 |
there has been | 10 |
and i believe | 10 |
except in the | 10 |
eggs of the | 10 |
than the rest | 10 |
in the nature | 10 |
of foreign pollen | 10 |
number of generations | 10 |
may be seen | 10 |
the differentiation of | 10 |
some of its | 10 |
which i am | 10 |
we have to | 10 |
that there must | 10 |
in the distribution | 10 |
this latter case | 10 |
propagated by seed | 10 |
and has been | 10 |
there is reason | 10 |
of domesticated animals | 10 |
long course of | 10 |
youatt on cattle | 10 |
species and varieties | 10 |
to an extreme | 10 |
the dezerta grande | 10 |
an analogous case | 10 |
that the same | 10 |
and it has | 10 |
effects of selection | 10 |
of the yellow | 10 |
the horns of | 10 |
in the year | 10 |
as we may | 10 |
the surrounding conditions | 10 |
case in point | 10 |
can be little | 10 |
have been subjected | 10 |
facts given in | 10 |
the right and | 10 |
any change in | 10 |
to madeira and | 10 |
that can be | 10 |
latent in the | 10 |
in consequence of | 10 |
reversion to a | 10 |
modification of the | 10 |
see in a | 10 |
under which they | 9 |
of a part | 9 |
the reason that | 9 |
is necessary to | 9 |
of a different | 9 |
to do so | 9 |
in the flowers | 9 |
in the swiss | 9 |
of a definite | 9 |
sterile when crossed | 9 |
correlation with the | 9 |
the species is | 9 |
for the reason | 9 |
uniform in character | 9 |
the same conclusion | 9 |
these cases the | 9 |
the range of | 9 |
of the skull | 9 |
the feet of | 9 |
selection has been | 9 |
the upper and | 9 |
the causes which | 9 |
of the sternum | 9 |
in the british | 9 |
result of a | 9 |
advantage of change | 9 |
origin of domestic | 9 |
conception of the | 9 |
on the head | 9 |
appears to me | 9 |
feral rabbits of | 9 |
in all its | 9 |
results from the | 9 |
in this way | 9 |
can be propagated | 9 |
that in many | 9 |
support of the | 9 |
on the individual | 9 |
all of which | 9 |
of the cabbage | 9 |
the white variety | 9 |
one of which | 9 |
in a single | 9 |
in the main | 9 |
at the time | 9 |
and natural selection | 9 |
a very early | 9 |
has been said | 9 |
i will give | 9 |
fixedness of character | 9 |
must be attributed | 9 |
from the germ | 9 |
the condition of | 9 |
power of the | 9 |
on the pig | 9 |
has been known | 9 |
facts could be | 9 |
instances have been | 9 |
of the forms | 9 |
in both cases | 9 |
there is good | 9 |
not so much | 9 |
but by the | 9 |
he does not | 9 |
complicated by the | 9 |
the fruit of | 9 |
is sufficient to | 9 |
exceptions to the | 9 |
on the good | 9 |
may be added | 9 |
is of the | 9 |
the other side | 9 |
species have been | 9 |
has remarked that | 9 |
the whole the | 9 |
as those of | 9 |
we are not | 9 |
concentration in s | 9 |
according to mr | 9 |
is crossed with | 9 |
ought not to | 9 |
inheritance of peculiarities | 9 |
is caused by | 9 |
fertilised by pollen | 9 |
tendency to sterility | 9 |
the question whether | 9 |
appeared in the | 9 |
we should have | 9 |
to the formation | 9 |
of the above | 9 |
all the individuals | 9 |
by various authors | 9 |
of white and | 9 |
to all the | 9 |
more liable to | 9 |
under the same | 9 |
a more or | 9 |
true it is | 9 |
which cannot be | 9 |
species are crossed | 9 |
proof of the | 9 |
i refer to | 9 |
the organic creation | 9 |
the subject is | 9 |
is the same | 9 |
of the pollen | 9 |
in connection with | 9 |
crossed with a | 9 |
spoken of as | 9 |
very difficult to | 9 |
it is very | 9 |
in so far | 9 |
the insects of | 9 |
as may be | 9 |
it must have | 9 |
as a general | 9 |
bred in the | 9 |
present state of | 9 |
way in which | 9 |
of the plants | 9 |
is evident that | 9 |
for by the | 9 |
the phenomenon of | 9 |
of the long | 9 |
the tissues of | 9 |
of the brain | 9 |
that many of | 9 |
depend on the | 9 |
are believed to | 9 |
difference in fertility | 9 |
would appear that | 9 |
of the hypothesis | 9 |
and which is | 9 |
the powers of | 9 |
the horse and | 9 |
so that it | 9 |
can be more | 9 |
all these cases | 9 |
the facts given | 9 |
to the rule | 9 |
is an important | 9 |
in lundy island | 9 |
in the great | 9 |
i have shown | 9 |
plants and animals | 9 |
apart from the | 9 |
one of its | 9 |
features of the | 9 |
than those of | 9 |
plants raised from | 9 |
in a similar | 9 |
that they cannot | 9 |
must not be | 9 |
as much as | 9 |
return to the | 9 |
the fact is | 9 |
crossing of the | 9 |
a new breed | 9 |
formation of new | 9 |
reduced in size | 9 |
of the variation | 9 |
which de vries | 9 |
in all these | 9 |
the head of | 9 |
that we cannot | 9 |
raised from the | 9 |
rather than to | 9 |
units of the | 9 |
summit of the | 9 |
in the structure | 9 |
of eggs of | 9 |
of use or | 9 |
in the united | 9 |
the survival of | 9 |
evidence that the | 9 |
laws of variation | 9 |
it is necessary | 9 |
at least as | 9 |
is notorious that | 9 |
cause of variability | 9 |
fact of the | 9 |
crossing of domestic | 9 |
in the shape | 9 |
the opposite sex | 9 |
we reflect on | 9 |
of the ordinary | 9 |
to that of | 9 |
postage cents extra | 9 |
find that the | 9 |
of each other | 9 |
which it was | 9 |
and for the | 9 |
in a greater | 9 |
as has been | 9 |
breeds of dogs | 9 |
of the cases | 9 |
the next generation | 9 |
than that of | 9 |
consequent on the | 9 |
peculiarities of the | 9 |
a broad scale | 9 |
of the increased | 9 |
the same genus | 9 |
and one of | 9 |
in correlation with | 9 |
many of our | 9 |
is it possible | 9 |
be met with | 9 |
animals or plants | 9 |
there may be | 9 |
but in this | 9 |
reason to suppose | 9 |
that the whole | 9 |
the increased use | 9 |
to the species | 9 |
of the cherry | 9 |
to be evolved | 9 |
of the silk | 9 |
our domestic productions | 9 |
by personal selection | 9 |
use of the | 9 |
the truth of | 9 |
distinction between the | 9 |
all the forms | 9 |
organic beings in | 9 |
two distinct species | 9 |
in the preceding | 9 |
to the general | 9 |
species which have | 9 |
the belief in | 9 |
in the sense | 9 |
the offspring from | 9 |
support of this | 9 |
and disuse of | 9 |
the result was | 9 |
admit that the | 9 |
are in the | 9 |
geographical races of | 9 |
domestic and wild | 9 |
infer that the | 9 |
appear to have | 9 |
what has been | 9 |
of any kind | 9 |
belong to the | 9 |
i have no | 9 |
that he had | 9 |
that though the | 9 |
remarks on the | 9 |
differ much in | 9 |
and when the | 9 |
various kinds of | 9 |
in a certain | 9 |
on the dezerta | 9 |
have been kept | 9 |
are on the | 9 |
a distinct individual | 9 |
light on the | 9 |
the division of | 9 |
the males of | 9 |
a long course | 9 |
gemmules of the | 9 |
owing to the | 9 |
in the common | 9 |
have been brought | 9 |
more variable than | 9 |
a species of | 9 |
legs of the | 9 |
believed to be | 9 |
where it is | 9 |
of the inherited | 9 |
plants which have | 9 |
this has been | 9 |
other such cases | 9 |
of the gemmules | 9 |
the surface of | 9 |
more readily than | 9 |
of the skeleton | 9 |
causes of variability | 9 |
that the fact | 9 |
limits of the | 9 |
a latent tendency | 8 |
development of each | 8 |
tail of the | 8 |
the several forms | 8 |
of the original | 8 |
or absence of | 8 |
transmission of character | 8 |
to the male | 8 |
diminished fertility of | 8 |
to me to | 8 |
remarked that the | 8 |
on the difference | 8 |
of a variety | 8 |
curious case of | 8 |
plant of the | 8 |
of the crossed | 8 |
the legs and | 8 |
the gemmules of | 8 |
does not seem | 8 |
in fertility between | 8 |
or any other | 8 |
a new and | 8 |
the niata cattle | 8 |
most of them | 8 |
that we must | 8 |
in our domesticated | 8 |
the value of | 8 |
cases of reversion | 8 |
of this plant | 8 |
as might be | 8 |
to look at | 8 |
in the neighbourhood | 8 |
which have long | 8 |
an amount of | 8 |
is at least | 8 |
two sides of | 8 |
of the vine | 8 |
the rate of | 8 |
to the belief | 8 |
is in some | 8 |
a doubt that | 8 |
we know of | 8 |
from the effects | 8 |
the changes which | 8 |
of the hind | 8 |
of cattle and | 8 |
appear in the | 8 |
in common with | 8 |
the increase of | 8 |
or with the | 8 |
is a mere | 8 |
all such cases | 8 |
of the seedlings | 8 |
in one sex | 8 |
in some way | 8 |
in each case | 8 |
in the foregoing | 8 |
that no one | 8 |
species in the | 8 |
variation of the | 8 |
of plumage in | 8 |
the fleece of | 8 |
it is at | 8 |
were at first | 8 |
in this state | 8 |
which is a | 8 |
to think that | 8 |
used as the | 8 |
have been the | 8 |
the first and | 8 |
of selection is | 8 |
animals of the | 8 |
of the weeping | 8 |
an important part | 8 |
between these two | 8 |
is much more | 8 |
effects of long | 8 |
especially to the | 8 |
the extinction of | 8 |
give rise to | 8 |
of the northern | 8 |
he adds that | 8 |
in that of | 8 |
probably due to | 8 |
a trace of | 8 |
can scarcely be | 8 |
the reduction of | 8 |
the two are | 8 |
in their conditions | 8 |
on the variability | 8 |
of peculiarities in | 8 |
hybrids of the | 8 |
of secondary sexual | 8 |
on one side | 8 |
of the tissues | 8 |
to me that | 8 |
is only one | 8 |
flower or fruit | 8 |
given on the | 8 |
even when the | 8 |
existence of the | 8 |
out of a | 8 |
spite of the | 8 |
of variation and | 8 |
parts which are | 8 |
here is a | 8 |
at about the | 8 |
an illustration of | 8 |
which appear to | 8 |
have been derived | 8 |
compensation of growth | 8 |
we can understand | 8 |
of the tail | 8 |
of the falkland | 8 |
de vries has | 8 |
two forms are | 8 |
to regard the | 8 |
those which are | 8 |
character in the | 8 |
derived from crossing | 8 |
from which it | 8 |
had not been | 8 |
on the wing | 8 |
bred in captivity | 8 |
that we know | 8 |
did not produce | 8 |
variability of the | 8 |
and even the | 8 |
for the study | 8 |
modifications in the | 8 |
i have observed | 8 |
necessary for the | 8 |
varieties of plants | 8 |
on the stigma | 8 |
in this chapter | 8 |
a still more | 8 |
in the old | 8 |
of the results | 8 |
to a great | 8 |
have been given | 8 |
hear from mr | 8 |
according to our | 8 |
the same period | 8 |
they are all | 8 |
in the child | 8 |
the first place | 8 |
the bones of | 8 |
that on the | 8 |
the species which | 8 |
and more especially | 8 |
in the development | 8 |
which seems to | 8 |
to the parent | 8 |
in the various | 8 |
of the seeds | 8 |
different breeds of | 8 |
be distinguished from | 8 |
is not an | 8 |
horse and ass | 8 |
of new characters | 8 |
have been rendered | 8 |
have already seen | 8 |
dogs of the | 8 |
at an earlier | 8 |
can be effected | 8 |
as i hear | 8 |
the fauna of | 8 |
as quoted in | 8 |
from that of | 8 |
the case is | 8 |
is the result | 8 |
with one of | 8 |
but there are | 8 |
to a difference | 8 |
the improvement of | 8 |
case of reversion | 8 |
long intervals of | 8 |
of the seed | 8 |
of the pea | 8 |
half of the | 8 |
factor of evolution | 8 |
as we now | 8 |
have been a | 8 |
were to be | 8 |
the two sides | 8 |
directly or indirectly | 8 |
breed in captivity | 8 |
general sterility of | 8 |
the one case | 8 |
nor is this | 8 |
to trace out | 8 |
wild and tame | 8 |
are well known | 8 |
connexion with the | 8 |
sterility of crossed | 8 |
be referred to | 8 |
of an animal | 8 |
certain varieties of | 8 |
in a position | 8 |
to some of | 8 |
those which were | 8 |
parts in the | 8 |
of wild animals | 8 |
to the conditions | 8 |
pollen from the | 8 |
in this country | 8 |
other parts of | 8 |
fruit of the | 8 |
and in a | 8 |
the same sub | 8 |
any of these | 8 |
referred to the | 8 |
natural selection of | 8 |
of the legs | 8 |
have been described | 8 |
directly on the | 8 |
it to the | 8 |
has long been | 8 |
their own kind | 8 |
occurrence of the | 8 |
of disuse of | 8 |
of this chapter | 8 |
to revert to | 8 |
and many other | 8 |
have been crossed | 8 |
a pair of | 8 |
the resemblance between | 8 |
base of the | 8 |
concentration in australia | 8 |
plumage of the | 8 |
digits in the | 8 |
been seen to | 8 |
what we know | 8 |
to understand the | 8 |
the latter are | 8 |
that they may | 8 |
is scarcely possible | 8 |
and a half | 8 |
brothers and sisters | 8 |
of many kinds | 8 |
of the country | 8 |
but it has | 8 |
it may perhaps | 8 |
remarked to me | 8 |
been observed to | 8 |
plants which are | 8 |
the kind of | 8 |
in our own | 8 |
that they should | 8 |
several breeds of | 8 |
a few words | 8 |
the processes of | 8 |
circumstances and conditions | 8 |
widely different from | 8 |
in various ways | 8 |
the present time | 8 |
seed in the | 8 |
have been formed | 8 |
analogous variation in | 8 |
of sheep in | 8 |
has already been | 8 |
the addition of | 8 |
that the change | 8 |
so that we | 8 |
and left sides | 8 |
and have been | 8 |
distinct from the | 8 |
of south america | 8 |
the various kinds | 8 |
any more than | 8 |
even in a | 8 |
to the other | 8 |
there will be | 8 |
limited by sex | 8 |
of the leg | 8 |
the skull of | 8 |
under changed conditions | 8 |
inherited effect of | 8 |
strong tendency to | 8 |
comparison with the | 8 |
at the base | 8 |
effect of foreign | 8 |
of the direct | 8 |
its peculiarity to | 8 |
transmitted to the | 8 |
crosses between the | 8 |
and that they | 8 |
on the inheritance | 8 |
and to be | 8 |
in another case | 8 |
species in a | 8 |
which is so | 8 |
divergence of character | 8 |
a process of | 8 |
breed of cattle | 8 |
practised by the | 8 |
during an early | 8 |
of the english | 8 |
we may safely | 8 |
not know whether | 8 |
of the causes | 8 |
and we shall | 8 |
of wild and | 8 |
there is only | 8 |
to be due | 8 |
classes of facts | 8 |
of certain characters | 8 |
of the british | 8 |
in the form | 8 |
of the external | 8 |
may be in | 8 |
all the parts | 8 |
that the one | 8 |
that when the | 8 |
consequence of this | 8 |
and the more | 8 |
but it would | 8 |
peculiarities in the | 8 |
and this would | 8 |
to a large | 8 |
to the extent | 8 |
of the variety | 8 |
the wild duck | 8 |
am informed by | 8 |
on a broad | 8 |
which we now | 8 |
may be called | 8 |
have had their | 8 |
the same state | 8 |
on the varieties | 8 |
have been thus | 8 |
looked at as | 8 |
is a much | 8 |
belonging to the | 8 |
the gemmules derived | 8 |
by far the | 8 |
good reason to | 8 |
and in one | 8 |
have been found | 8 |
should have been | 8 |
on the ground | 8 |
already seen that | 8 |
introduction to the | 8 |
the opinion of | 8 |
in any other | 8 |
in determining the | 8 |
variety of v | 8 |
view that the | 8 |
increased fertility of | 8 |
the first step | 8 |
intervals of time | 8 |
leading to the | 8 |
through the reproductive | 8 |
relating to the | 8 |
either of the | 8 |
of gallus bankiva | 8 |
they should be | 8 |
in connexion with | 8 |
of one or | 8 |
various degrees of | 8 |
common to both | 8 |
of cultivated plants | 8 |
of the origin | 8 |
islands of the | 8 |
of the living | 8 |
the dogs of | 8 |
by the rev | 8 |
the same place | 8 |
of domestic and | 8 |
with any other | 8 |
by de vries | 8 |
what i have | 8 |
or the other | 8 |
we see this | 8 |
been derived from | 8 |
process by which | 8 |
that when two | 8 |
is not only | 8 |
change of structure | 8 |
there was no | 8 |
and it would | 8 |
of selection as | 8 |
inheritance of a | 8 |
must be some | 8 |
in various parts | 8 |
be extended to | 8 |
are exposed to | 8 |
which they were | 8 |
on the cultivation | 8 |
which we can | 8 |
various breeds of | 8 |
of their own | 8 |
at a birth | 8 |
ready to be | 8 |
on the organisation | 8 |
as it may | 8 |
and this may | 8 |
compared with the | 8 |
fleece of sheep | 8 |
that we should | 8 |
the tail of | 8 |
of its own | 8 |
the attempt to | 8 |
diminution of the | 8 |
believe that it | 8 |
shown that the | 8 |
and which are | 8 |
perhaps a state | 8 |
seeing that the | 8 |
of crossed species | 8 |
the capacity of | 8 |
does not appear | 8 |
the young of | 8 |
of this view | 8 |
the fourth generation | 8 |
in many instances | 8 |
be made to | 8 |
possible that the | 8 |
there is little | 8 |
eminently liable to | 8 |
the sides of | 8 |
and some of | 8 |
the several species | 8 |
been recorded of | 8 |
is a very | 8 |
the flowers are | 8 |
of two or | 8 |
i would not | 8 |
they would have | 8 |
tendency to vary | 8 |
with which we | 8 |
would have to | 8 |
of the plumage | 8 |
can be crossed | 8 |
has yet been | 8 |
the culture of | 8 |
foreign pollen on | 8 |
the former of | 8 |
be looked at | 8 |
to the theory | 8 |
uniformity of character | 8 |
the whole subject | 8 |
thousands of generations | 7 |
subject of the | 7 |
have been raised | 7 |
in the season | 7 |
to illustrate the | 7 |
belonging to distinct | 7 |
several members of | 7 |
to the production | 7 |
of difference between | 7 |
the same form | 7 |
each of the | 7 |
course of a | 7 |
to maintain that | 7 |
stages of development | 7 |
the properties of | 7 |
on the hind | 7 |
struck with the | 7 |
problem of the | 7 |
many cases of | 7 |
director of the | 7 |
have heard of | 7 |
at least two | 7 |
an early age | 7 |
the male is | 7 |
proved that the | 7 |
cannot have been | 7 |
an extreme point | 7 |
how far the | 7 |
the centre of | 7 |
but that in | 7 |
when compared with | 7 |
the eleventh chapter | 7 |
relations of the | 7 |
on the coast | 7 |
of the series | 7 |
the outward contour | 7 |
principle of economy | 7 |
from time to | 7 |
such a case | 7 |
in the dog | 7 |
be remembered that | 7 |
to be observed | 7 |
is to a | 7 |
we shall find | 7 |
most liable to | 7 |
of this species | 7 |
the corresponding parts | 7 |
of a very | 7 |
have also seen | 7 |
those of a | 7 |
the skin and | 7 |
that the most | 7 |
of the fruit | 7 |
than to the | 7 |
by the presence | 7 |
may be presumed | 7 |
it is more | 7 |
different from that | 7 |
and the latter | 7 |
of life on | 7 |
in any sense | 7 |
the body is | 7 |
to the attacks | 7 |
of the factors | 7 |
in the egg | 7 |
tend to vary | 7 |
glance at the | 7 |
as shown in | 7 |
on a variety | 7 |
the conception of | 7 |
in a general | 7 |
of the gooseberry | 7 |
to do with | 7 |
transmission of the | 7 |
to make the | 7 |
with advancing age | 7 |
correspond with the | 7 |
of the opposite | 7 |
a similar manner | 7 |
to the subject | 7 |
attention to this | 7 |
matter of fact | 7 |
we shall immediately | 7 |
the consideration of | 7 |
and the two | 7 |
lapse of time | 7 |
of the natural | 7 |
case may be | 7 |
to some extent | 7 |
it is obvious | 7 |
it at first | 7 |
of the hen | 7 |
on the skull | 7 |
of the leaf | 7 |
of any one | 7 |
natural selection in | 7 |
is well shown | 7 |
produced in the | 7 |
such facts as | 7 |
in the eleventh | 7 |
is as yet | 7 |
we are able | 7 |
materials for the | 7 |
what is the | 7 |
chapter on pangenesis | 7 |
attempted to show | 7 |
in the whole | 7 |
a high degree | 7 |
placed on the | 7 |
that they do | 7 |
the same with | 7 |
on opposite sides | 7 |
a considerable number | 7 |
on the opposite | 7 |
in the mass | 7 |
sexual and asexual | 7 |
action of certain | 7 |
that one of | 7 |
of life to | 7 |
we thus see | 7 |
attached to the | 7 |
or even more | 7 |
we must suppose | 7 |
effects of changed | 7 |
of the materials | 7 |
an example of | 7 |
seeds in the | 7 |
we may be | 7 |
which would be | 7 |
and i am | 7 |
are the result | 7 |
to the problem | 7 |
have had a | 7 |
to those who | 7 |
have come into | 7 |
at all times | 7 |
two of the | 7 |
the climate of | 7 |
one or the | 7 |
i have given | 7 |
if it is | 7 |
in the botanic | 7 |
different from the | 7 |
to a single | 7 |
of the food | 7 |
these latter cases | 7 |
if it had | 7 |
evidence of the | 7 |
of the bones | 7 |
in the previous | 7 |
in the species | 7 |
of action of | 7 |
have been selected | 7 |
be a doubt | 7 |
of horns in | 7 |
is determined by | 7 |
a species in | 7 |
there seems to | 7 |
of the animate | 7 |
for a time | 7 |
have come to | 7 |
their early development | 7 |
crossing in itself | 7 |
the great principle | 7 |
in the human | 7 |
and of these | 7 |
be the same | 7 |
in some respects | 7 |
authority of mr | 7 |
i am inclined | 7 |
be in a | 7 |
the third generation | 7 |
be brought about | 7 |
in one sense | 7 |
when all the | 7 |
again and again | 7 |
in the way | 7 |
the scilly islands | 7 |
stigma of the | 7 |
are the same | 7 |
with the colour | 7 |
breed of fowls | 7 |
the black form | 7 |
the order of | 7 |
of the sweet | 7 |
in many other | 7 |
modifications of the | 7 |
are apt to | 7 |
for the present | 7 |
the greater or | 7 |
well as of | 7 |
in a latent | 7 |
how is it | 7 |
lately published by | 7 |
in the madeira | 7 |
outward contour of | 7 |
is no more | 7 |
and others which | 7 |
that the latter | 7 |
in almost every | 7 |
far from being | 7 |
when grown in | 7 |
wings of the | 7 |
these two species | 7 |
be crossed with | 7 |
not wish to | 7 |
raised from a | 7 |
in the proportion | 7 |
the same kind | 7 |
many species of | 7 |
i have just | 7 |
of the eyes | 7 |
shortening of the | 7 |
by which they | 7 |
to examine the | 7 |
time to time | 7 |
of the local | 7 |
in the canaries | 7 |
by pollen from | 7 |
we are thus | 7 |
in its native | 7 |
the present state | 7 |
that he was | 7 |
contour of the | 7 |
changed habits of | 7 |
distinct species of | 7 |
of the question | 7 |
that the male | 7 |
i have said | 7 |
increased use or | 7 |
on the evil | 7 |
root of the | 7 |
process of selection | 7 |
other varieties of | 7 |
we have now | 7 |
black and white | 7 |
latent tendency to | 7 |
well as in | 7 |
of the colour | 7 |
an additional digit | 7 |
from four to | 7 |
a native of | 7 |
white and yellow | 7 |
spots on the | 7 |
a large extent | 7 |
when we hear | 7 |
now it is | 7 |
from the rest | 7 |
there is one | 7 |
the foregoing facts | 7 |
from that which | 7 |
because they are | 7 |