(2227) 
cerned, enfeebles more than the lofs of much Blood* He 
refuteth thofe that have taught the original of the Seed 
from the Brain 5 as alfo thofe, that have beheved it to pro- 
ceed from the whole Body. He affigneth the manner^how 
this Spirit is corporified and inc^a^fatcd^ and why 'tis fo ? 
provcth experimentally , that being fnbtilized by the 
warmth of the Vtenis, it becomes a very fine Spirit » refu* 
ting, onthis occafion , the opinion of Oalen^ importing 
that from the corpulency of tho. Semen virile the fperma- 
tick parts are generated 5 and aflerting on the contrary^ 
thiat thefe are formed de fero utili fanguims mevjlrui. By the 
fame Experiment he undertakes to evince , that Dr. Har^ 
i>^y was miftaken, believing the T7^er2«j- to be immaterial- 
ly made fecoad, when he found nothing of a feminal bo- 
dy in the wombs of all thoic Animals open'd by him* Be* 
fides he teach eth, how the Semen is mixed cum menjlruis i 
and how it is moved futably to the diverfity of kinds* He 
examins, how the folid parts are generated 3 and refuting 
all other opinions about this point, he maintains that they 
arc produced all at once, though they be difcern'd at dif- 
ferent times, according to the greater or lefs ncce(Sty of 
thofe parts. He (hews, how they become fenfitive , and 
begin tohave life ^ contending that they are not nourifli'd 
till they are fenfible* He explains, from what caufe and 
for what end the Heart is moved ; what thing the punRum 
/aliens is ^ and upon what ^account it hath been reputed 
to be the Heart. And having attem pted to refolve many 
difHcultieSj he thinks he hath determined many other cu- 
rious and confiderable particulars by experimented prin-^ 
ciples. 
Dr. W^Wis's opinion eomermngthe Hypothefis Phyfica Nova 
of Dr. Leibniti'US, promffed in t^umb, j ^nd here infer-' 
ted inthe jame tongue ^'mheretn it w as mitten to the Publijher^ 
April. 7. 1671. 
ClarLft.-Vir, 
IE^/ ege femel at que iter urn 5 quam impertiifti^ Z);?a. Lefbni" 
_j til l^jipoib'^Jin Novam ^ de qua opmonem me am petit ts^ 
^.uthes 
