threds are droven the fafter out of the ftomachy and 
through the Bowels^ and therefore are the lefs broken and 
fliortned. 
Such like H/^^^/^^'i" or pieces offlefh I have obferved 
in my one Excrements^ which I conceive were made by the 
nipping of the fold? of the jiomacJ^: for thefe Filaments 
are not ttrong, when there lye yut few of them together ; 
or when we make a Cord or l{ope of them, which upon 
ftretching bears unequally ; though in another cale a 
wzz^^:/^ madeupoffeveralofthefe/f/^Tw^w^j", and bearing 
epually in every part, may be very ftrong. 
I have often maintaind among our Pyhficians^ that tho 
the heart and Pulfe beat quicker then ordinary, yet the 
Circulation of the blood is not performed in leffertime; 
and the reafons which I gave were thefe. The blood in 
many Feavorijh perfons is very thick, and therefore paflTes 
flowly, and with diflSculty, thro the fmaller ^r^^ry/,and 
requires a very ftrong beating in the heart to force its 
way. When the blood is thick and makes this refiftance, 
the heart upon contracting it felf, cannot force it all out, 
but a great part remains behind in the Ventricles. This 
remaining blood being over heated by the heart, makes 
that little blood which comes frefh out of the Veins, too 
hotlikewifci andin the meantime the heart not being, 
able to free it felf of all the blood contained in its Cavities A 
cafts out only the thinner part, which is quickly fpential 
the nourifliment of the body, whereby the blood ftill be-^ ^ 
comes thicker, and r^rr^^/^^^/ lefs faft. lean not admit 
that the time of the circuit e of the blood, ftiould be efli- 
mated by the number of Pulfesm an hour, and the capa- 
city of the Cavity s of the heart ; for as the Lungs upon ex- 
piratiou are never totally without air, fo the heart in a 
well conftituted body, is never upon the Sijiole abfolutely 
with out blood : I imagine alfo that when the heart is too 
f\x\\oi blood (as I have before urged) its mufcles maybe 
fo far ftrained, and kept beyond their ulual bent, that 
