382 ANIMAL REPRODUCTIONS. 
reprodudtion foon became vifible. Thus a good 
obfervation was never obtained, unlefs the tail 
was divided about the middle, and by a fection 
perpendicular to the axis. A {ftream of blood, 
as thick as a hog’s briftle, always fpouted from 
the wound. The large veflel, from which it 
flows, is fituated near the vertebra, and its ori- — 
fice is vifible by the naked eye ; it immediately 
clofes ; and the orifice is diftinguifhed by a red- 
difh or brownifh point. 
The tail of newts is very fenfible, which is par- 
ticularly evident in the flendereft part. A por- 
tion cut off will retain life, and move whole 
hours ; and when life feems entirely extinct, we 
have only to prick the pointed extremity, that 
motion may be renewed ; it rifes and falls alter- 
nately, and with greater force, according to the 
period that has elapfed fince the operation. The 
motion of this feparated part bears great refem- 
blance to that which is peculiar to certain apodal 
worms; it is undulatory, and evidently depends 
on irritability, which is extremely active in fo 
mufcular an organ. 
Immediately after the operation, the area of 
the cut exhibits a very long ellipfe ; the two ex- 
tremities almoft terminating in a point. The 
{malleft diameter is about a line acrofs, and the 
largeft five or fix. In the centre, are the verte- _ 
brae, 
