ANIMAL REPRODUCTIONS, 423 
er than the reft, is obfcurely feen the little groove, 
‘indicating the place of union. A wide angle is 
formed by the cleft, 4, b. 
While confidering this fpecies of montftrofity, 
an experiment occurred to me for perfé€ting the 
theory of germs. I cut off one of the branches 
clofe to its origin with very {mall fharp pointed 
{ciflars, 3 July. 
On the 19 of Auguft, the finger had protrud- 
ed a new branch half as long as the correfpond- 
ing one, and evidently thicker : and on the 25, it 
was equal in length, but ftill thicker. 
This day, I cut off the unmutilated branch at 
- its bafe. Reproduction advanced much flower ; 
and not before the middle of OGober was it 
equal to the part replaced. 
Both branches were amputated on the 21. My 
object was to difcover whether the finger would 
reproduce a cleft fimilar to the firft: but an ac-, 
cident which befel the newt prevented the fatisfac- 
tion of my curiofity. 
However, it is proved by this experiment, that 
each branch contained a principle of reproduc- 
tion, the evolution of which was determined by” 
the operation. 
I afterwards procured another newt with the 
fame monftrofity of the third finger. It was 
caught during fpring of the prefent year 1780. 
@n the 1 of September, I amputated the cleft at 
Dd4 Its 
