[434] 
Now ifwefhall fuppofe that a Mans Blood bears the 
lame Proportion to his weight, as that of any of the afore- 
iaid Animals had to its weight, which in a L^;»^ was the 
grcateft, being ^4 P-^rt, it will follow that the quantity of 
circulating Blood in a Man weighing 160/. will not exceed 
8/. or 1 20' ounces ; According to '.vhich computation the 
Blood will circulate 1 40 times in an hour. But let us fup- 
pofe that inftead of 8/. the malTe of Blood in fuch a Man 
be i : it w.li follow that it will circulate between 9:^ and 
94 times in an hour; which is a circulation and half, and 
fbme what more, every minute. I take this lart computa- 
tion to be very modeft, when efpecially it isconfidered 
that in the Lami when opened,there was fcarce a dram of 
Blood ; in thtS jeep not 3 oi^^, to be (een. From the celerity 
of the motion of the Blood now mentioned, we may giv^e 
a good account uf thefoddain Refcftion with viQ:uais,and 
particularly fuchas are liquid : we may alfo accouncibr- 
the quick paffing of Qrin^from the fame thing ; and alfb 
the quick motion of the C%/^' into the Brealts of Nurfes, 
without fuppofing unknown palTages, from the Stomach 
or any other part, into the 'Bladder and Breafl^. 
Half an ounce of Blood at a Diajiole is the greateft - 
quantity that 1 remember any Anatomift fuppofes to gett 
- into the Heart, and they fupp )fe the quantity of Blood in 
the Body to be between i 5 and 2 5/. by which it will ap- 
pear how their computations and mine differ,. 
