THE SECOND VISIT 
129 
down in efforts of acute criticism at low and musical 
passages. Every change of note was marked by some 
alteration of expression in the faces of the excited little 
monkeys, and a series of discordant notes roused them 
to a passion of rage. Most of the other monkeys came 
up to listen ; the Malbrook monkey dropped the clay 
pipe he was making-believe to smoke, and the white- 
nosed monkey stole a lady’s veil and picked it 
thoughtfully to pieces. But a big baboon recently 
brought to the Gardens assumed a most comic look of 
disgust and surprise, and walked off to the utmost 
limits of its chain. 
It is easier to give a record of such experiments 
than to speak with confidence of the feelings excited* 
in our various listeners. Darwin, while giving many 
instances of the expression of anger, pain, and fear, 
gives few of the expression of pleasure, or the milder 
emotions of curiosity and contentment. It will not, 
however, be difficult to show that in many cases the 
animals at the Zoo did exhibit pleasure and curiosity 
in a very marked degree ; while strange to say, in the 
case of others, anger or fear was shown in all the 
modes which Darwin has described. With the 
behaviour of the wolves we may compare his descrip- 
tion of the characteristic expression of fear in carni- 
vorous animals, by erecting the hair and uncovering 
the teeth and trembling. “ Cattle and sheep,” says 
the great naturalist, “ are remarkable for displaying 
their emotions in a very slight degree, except that of 
extreme pain.” But in the case of the wild sheep, 
