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OBSERVATIONS. ayv EXPERIMENTS. 
wer ae ” J 
yl 38) «A ve ON THE - 
‘SSEMINAL: VERMICULI OF MAN AND OTHER ANIMALS, 
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} WITH AN EXAMINATION OF THE CELEBRATED T 
ORY OF ORGANIC MOLECULES. 
. et ay aLens 
/ ’ p 
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q CHAP. IV. 
{ 
REFLECTIONS ON M. DE BUFFON’S OBSERVATIONS— 
COMPARISON OF SEMINAL VERMICULI AND THE 
-PUTREDINOUS ANIMALCULA OF SEMEN, 
Ler us continue to examine the other princi- 
pal refults from De Buffon’s obfervations, that is, 
the appearance of thofe very long and flender 
filaments which the vermiculi drag along in their 
courfe; the contraction and difappearance of 
thems the activity the vermiculi acquire with 
age; the facility of motion in every direction; 
the change -of form, divifion, diminution of fize ; 
and, laftly, their total deftruction in a few days. 
~ To begin with the firft-: Leeuwenhoeck, my- 
felf, and ether naturalifts, have remarked that 
each vermicule in the femen of man, and of fe- 
veral other animals, has a long appendage which 
. it drags along as it fwims. But this appendage 
al is not as Buffon would incline, a thread or long 
wcViers II. A. corpufculum, 
