27<> CONTRIBUTIONS TO COMPAllATI VK PATHOLOGY. 
removed, and the apple was placed upon a chair ; then, after a 
most cautious and keen scrutiny, with many doubts and mis- 
givings, the timid creature at length ventured to take the 
offered prize. From this experiment it is plain that the snake 
is dreaded instinctly even by the largest of the simiadae.” 
After all, the real character and habits, and intellect of the 
chimpanzee, remain to be ascertained ; and it is to be hoped, 
that the opportunity may yet occur, by the captivity of one of 
more advanced age, of forming a more correct estimate of them. 
This interesting feilovv remained with us, apparently in the 
enjoyment of perfect health, until the 29th of November, when 
he was observed to have suddenly lost the use of the left leg. He 
could not put it to the ground, and when he attempted to do so 
he cried with pain. In the course of a few hours the use of the 
right leg was gone : he could scarcely move at all ; it was a 
crawling kind of motion, and as he attempted to move he cried 
dreadfully. I was in doubt whether it was a case of rheumatism 
or cramp. I gave him three grains of calomel, and ordered 
plenty of friction to be used during the afternoon and night. On 
the following day he was quite well, and so he continued until 
Feb. the 27th, when I thought that he did not appear to be in 
his usual health. His appetite failed ; he was restless; he had a 
dull yet anxious countenance ; and his paw, when he gave it to me, 
for by this time he and I were sworn friends, was hot. There was 
no apparent local affection. He was feverish. I ordered that 
two drachms of the syrup of buckthorn should be given in 
his tea. 
28th. — A very eminent surgeon did me the kindness to exa- 
mine him with me. The case was ultimately unfortunate ; and 
I will record no name. Several medical gentlemen, of whose 
friendship 1 am proud, afterwards met me in consultation ; and I 
derived from them many a valuable hint. On me, if there be 
blame — and my readers will use their own judgment as to 
that — on me let the blame fall. An evident pallidness was steal- 
ing over his dark face ; his ears were lividly pale, and his coun- 
tenance expressed much anxiety and debility. He would play 
with us a little when we coaxed him ; but he was dull, and be- 
coming irritable. Another dose of the syrup of buckthorn was 
ordered. 
29th. — The pallidness increases, and the dulness, and the 
failure of appetite. He readily takes his medicine in his tea. 
It has not produced the desired effect — double the quantity. 
March IsL — He does not cough — he does not heave at the 
flanks — but he is listless ; he must be coaxed to take the least 
particle of food ; and he has the sick-monkey expression of coun- 
