Il. SEMINAL VERMICULI. 35 
the cold of {now to the heat of the atmofphere. 
The firft motion that appeared was ofcillation ; 
the body and tail began a languid vibration from 
right to left, and reciprocally ; motion was then 
communicated to the whole vermiculus. At firft; 
it was f{carcely perceptible ; it foon increafed, and 
grew very confiderable. It fhould likewife be 
added, as cold does not render all the vermiculi 
motionlefs at the fame moment, but fome later 
than ochers, neither does heat affect all with equal 
power. 
I fubjected the feminal fluids of man and the 
bull to the fame experiment, and had the fame 
refults as from the femen of the horfe, except 
that a degree of cold lefs than freezing immedi- 
ately deftroyed all motion in the vermiculi of the 
bull. | 3 
On approach of the following winter, the fame 
experiments were refumed; and I fucceeded in 
reanimating torpid vermiculi by breathing on the 
femen, by applying my finger to the tube on 
which fome drops were put, or by placing it near 
the fire: Removed from this reviving heat, they 
_ fell into the fame lethargy as when in fummer 
. they were tranfmitted from the atmofpherical 
temperature to the cold of fnow. During the 
rigorous feafon, | expofed them to a more fevere 
trial: they were expofed to cold above g? 
below freezing. As might have been expected, 
"4 € 32 it 
