Chap. 26. *4 Treatift of B O D I E S. 



with fpiritof wine,with (harp white vvinc,or with any piercina 

 liqiiour; it prefcntly dycth: for the acutencffeof iiich fubftances 

 pierceth through the vifcuous bloud, and maketh way for the 

 heat to get out. 



But this firft mover of an animall , muft have fomcthing 

 from without to ftirre it up; elfc, the heat would lie in it, as if 

 h were defcd; and in time would become abfolutely fo. In egges, 

 you fee this exteriour mover, is the warmth of the lienne hatch- 

 ing them. And in Embryons, it is the warmth of the mothers 

 wombe. But when in either of them, the heart is completely 

 formed, and isenclofed in the breafi; much heat is likcvvife en- 

 clofed there, in all the parts near about the heart; partly made 

 by the heart itfclf/and partly caufed by the outward heat,which 

 helped alfb to make that in the heart : and then although the 

 warmth of the hen or of the mothers womb, do forlake the 

 heart; yet this ftirreth up the native heat within the heart and 

 keepeth it in motion, and maketh it feed ftill upon new fcwcll, 

 as faft as that which it worketh upondecayctb. 



But to exprefle more parriculai ly how this motion is effected; 

 we are to note, that the heart hath in the ventricles of it three 

 forts of fibers: the firft go long wayes or are ftraight ones, on pcndh 

 the fides of the ventricles from the thick bafis of the heart, to- 

 wards the little tip or cone of it: the fecond, go croffe or round- 

 Wayes about the ventricles within the heart : and the third, are 

 tranfverfall or thwart ones. Nexr, we are to remember,that the 

 bcart is fixed to the body by its bafe; and hangeth loofe at the 

 cone. Now then, the fibers being of the nature of fuch things 

 as will fwell and grow thicker by being moiftened, and confe- 

 quently fhrink up in length and grow fliorter in proportion to 

 their fwelling thicker ( as you may oblerve in a loofe wrought 

 hempen rope ) it muft of neceflity follow, that when the bloud 

 falleth into the heart ( which is of a kind of fpungie fubftance ) 

 the fibers being therewith moiftened, they will prelently fwcll 

 in round nefle and flirink in length. 



Nexr, we are to note, that there is a double motion in the 

 heart: the one of opening, which is called, Diaftole; the other of 

 '(hutting, which is termed Syftole. And although Dotftoiiv Har- 

 vey feemeth to allow the opening of the heart to be no motion; 



T 4 buc 



