concerning the Reproduction of Nerves. 195 
he was affected from it ; for, excepting a little moroseness, 
there was scarcely any alteration perceptible, so that in a few 
hours after the operation he took food as usual. On the third 
day, I divided the other nerve ; but the same symptoms imme- 
diately supervened here as followed the division of both nerves 
in the former experiments : he continued in a state of restless- 
ness and anxiety, with palpitations and tremors, until the 
fourth day, when he died. 
The event of this experiment differs in nothing from the 
former, than that the fate of the animal was suspended a little 
longer, but the ultimate effect was exactly the same : there- 
fore, in the first experiments, the death of the animal is not to he 
imputed to the mere sudden deprivation of nervous energy , but to 
its absolute loss. 
Wishing next to determine whether, by lengthening the 
interval between the division of the two nerves, a few days 
more, the life of the animal could not be protracted to a 
greater length, or even saved, I made another experiment. 
EXPERIMENT. 
Having divided one of the nerves of the eighth pair, and 
waited the lapse of nine days, I divided the other. The same 
symptoms came on now as in the last experiment, but scarcely 
so violent. The only kind of food he would take was milk, 
and that in small quantities, and this always produced great 
uneasiness at the stomach, with symptoms of indigestion. In 
this state he continued thirteen days, and then died, very 
much emaciated. 
From this dog having lingered so long, I was beginning to 
C c 2 ' 
