ANIMAL REPRODUCTIONS. 393 
I had more reafon to regret lofing the fubjec& 
of my fifth experiment, that is, the newt which 
had loft three fingers and reproduced four. The 
monttrofity rendered it precious. It had been 
- carefully preferved during winter, and was in 
perfect health in the following {pring ; therefore 
I cannot tell from what caufe it died. Sig. Spal- 
lanzani has proved, that worms are found in thefe 
little quadrupeds ; perhaps their numbers might 
occafion death. Whatever it was, the four new 
fingers had grown confiderably, and become dark 
coloured ; but their arrangement was equally ir- 
regular as at firft. + 
‘Here I may remark, that it is unneceflary to 
change the water as often in winter as during 
fummer. ‘That in a veffel, containing one large 
newt, has remained eight days pure in winter; 
while it has become turbid in two or three, and 
| fometimes fooner, during fummer. Newts then 
perfpire, and evacuate more copioufly, and are al- 
fo more voracious. The ejectas are grey fila- 
ments, or flocks, floating in the water(1). 
It is incredible how long the new fingers re- 
guire to attain the fize of the old. 1! have had 
newts, whofe fingers, in thirteen months and 
more, 
(1) Newts frequently void fmall round or oyal fubftan- 
ces, of a brown colour, but of very little confiftence. 
Some are at leaft as large as a pea, 
