cf Animal Subjlances. 33 3 
Mr. Cruikfhanks, in his Letter to Mr. Clare, 
p. 87, fays, “ Not only the brain, but the nerves 
alfo, appear to have other properties than we have 
hitherto apprehended. Some years ago, I de- 
monftrated, by experiments on living animals, 
that nerves divided unite again ; and that when 
portions had been cut out, they were regene¬ 
rated : in both inftances the animals perfe&ly 
recovered. Thefe experiments I hope foon to 
be able to lay before the public; meantime I 
am happy to find, they have been recently con¬ 
firmed by fo great authority, as the Abbe Mon¬ 
tana, to whom I communicated my difcovery, 
and fhewed my preparations of united and rege¬ 
nerated nerves.”* 
Mr. Gooch has given us a remarkable cafe of 
the cuticle and nails,f being frequently caft off 
and regenerated, particularly in the feet and 
hands, fometimes twice in a year. Thofe of the 
hands were caft off whole, anc[ we are furnifhed 
with an engraving of a pair of thefe cuticular 
gloves. 
* Dr. Monro, in the work before mentioned, has given 
a plate (Vid. Tab. XIV.) to lhew the regeneration of the 
fciatic nerves, which had been divided in living frogs, and 
dilfecled twelve months after. The regenerated parts are 
of a darker colour than the original nerves, which proves, 
that there was not a mere coaptation of the divided ends. 
f Philofophical Tranfaftion?, vol. LIX. p. 281. 
There 
