A table instructive when and how a man cunningly let blood of all the necessary veins of man's body very profitable for all Surgeons and Barbers.  
O 'TH veins of the forehead and the temples do syringe and grow of the exterial throat veins like as branches, the which must be opened drawing the launcer overthwart the vain, I call it letting overthwart the vain according to ancient doctors the which is not fully along the vain: nor fully overthwart the vain, but keepeth a mean between both. And the letting of this vain is good for apostems in the eyen, and the migrain, and for great headache, and for alteration of the wit, for the frenzy, and for the new lepre.  
B The veins of the neck that commonly are called the veins Guiden or● iugulares exteriores must be opened overthwart the vain, letting the launcer decline a little a long the vain but not to much: or else it should be hard to staunch the blood. And he that will open this vain well, must cause the patient to bow his head from that side where he will open the vain, that she may be bend. And this vain must be opened (as saith Avicen) with a launcer cum pilo, that is to say, that hath a pin overthwart about the end of the launcer, to keep it for going to deep in the vain. And the letting of these veins is good for the humours of the head, for the rheum and the migrain. And it is to be noted that all the veins of the head ought to be let after a man hath eaten, neither ought these veins to be let in those, in whom is required the power to engender, for (as sayeth Avicen) through these veins are voided the spirits that nature doth send forth for generation.  
C The vain on the out side of the arm the which the new practisers commonly do call Cephalica, & Galen vena externa and also Humeralis, taketh his original with the Guiden or iugulares exteriores from the hollow vain. And this vain Cephalica must be opened with a greater hole than the other veins, or else (as sayeth Haly abbess the ancient physician in the fourth book of his practise) the fore said vain is dangerous to fall to an apostemation. And great heed must be taken for failing in opening this vein, for she is yeopardous to let. For if ye dare not touch this vain Cephalyke, and shrug to open it (as some barbers or Chirurgens that be not well expert do) ye shall do great harm to the patiented and cause danger of apostemation. Always if ye touch this vain well at the first lancing, she is the same that of all veins doth grieve less in letting of bloúde: how be it what so ever ye do make the hole meetly great. The opening of this vain is good for running of the eyen, and all manner of headache, and for the falling sickness.  
D The vain that appeareth in the mid of the arm before the bowing of it, or after the bowing, the which commonly is called the Median or Mediana, or Nigra after Avicen, or after Haly abbess Mediastina, and after Rhasis ad Almansorem she is called vena matrix or Cardi ata: hath her original or spring partly of the Cephalica, and partly of the Basilica, the which must be opened overthwart the vain or at the least declining the launcer a little awry: without one will let twice: and the letting blood in this vain, is good for all griefs & diseases of the members, stomach, rib and sides: for she is the fountain of all the body.  
A figure for necessary letting off blounde.  
A  
B  
C  
D  
E  
F  
G  
H  
I  
I  
K  
F The vain that appeareth about the top of the pulse is the branch or twig of the Cephalica.  
G The second vain that lightly appeareth about the myddelmoste finger, & is commonly called Funis brachij, is also a branch or twig of the Cephalica.  
H The third vain of the hand the which appeareth about the little finger, & is commonly called of the Physicians or Chirurgeons Saluatella or vena titillaris or Ascellaris, is also a branch of the Basilica. The which veins of the hand as also other outward veins, are of small value or profit to be let or opened: because they never yield much blood. And these must be opened as those of the feet, namely in warm water, to cause the veins to swell above the sinews.  
I The vain of the inner ankle of the foot, the which appeareth more perfectly than the other, is commonly called Saphena, and cometh (as doth also the Sciatica) from the great hollowness that is under the knee.  
K The other vain that is on the outside of the foot, is called Sciatica, and cometh likewise of the great hollowness under the knee. And the letting of these two veins is good for all manner of swellings and apostems of the privy members. The which veins of the feet are yeopardous for deep lancing, and specially the Sciatica, which is more fearful to be touched then the Saphena. For if ye open the Sciatica and launch to deep, for fear of failing, because they appear so small: ye shall hardly escape, but that ye shall touch some senowe adjoining to the same veins, whereof might come great pain & other evil accidents: As we have seen otherwiles that for ignorance of the barbers and Surgeon's, the patient did fall into diverse griefs of the sinews or the cramp. This and such like griefs therefore are that causes why it is needful to bathe the hand and feet in warm water when they shall be launched, to cause them to swell and appear the better: for they be little of themselves, and in giving them a cut with the launcer, ye must always beware of the se●●●es. Also the Sciatica must be launched as the Saphena, namely: a little overthwart, saying they appear enough. And generally every vain that is in a place full of sinews or between sinews must be opened along the vain, and that for two reasons: The first is to eschew the sinews ●● what place so ever they be. The second is that the vain, that is cut or blemished along the vain, is not so dangerous for the cramp or other evil accidents (as saith Galen in his. v. book of Methodus Therapentice) as when she is launched along or a little overthwart.  
¶ Behold gentle reader these are the veins that are commonly in ure to be let. There are many other veins that may be cut or let for diverse griefs and diseases, but because they are not or little in use: and also because Galen & other ancient Greeks have made no mention of letting of them in their writings: therefore let this little fruitful table suffice the at this time, by the which thou mayst exercise and teach the self lightly and without danger of any evil accidents to let any vain of man's body.  
¶ God save the king.   

¶ Imprinted at London in Aldersgate street by john Herforde.