493 
ANIMAL INTELLIGENCE. 
screw, repeating the results of his newly earned knowledge 
over and over again, till one could not but marvel at the 
intent abstraction of the 6 dumb brute ? — this was so dif- 
ferent from anything to be met with in any other animal, 
that I confess I should not have believed what I saw 
unless I had repeatedly seen it with my own eyes. As my 
sister once observed, while we were watching him conduct- 
ing some of his researches, in oblivion to his food and all his 
other surroundings — 6 when a monkey behaves like this, it 
is no wonder that man is a scientific animal ! ’ And in my 
next work I shall hope to show how, from so high a 
starting-point, the psychology of the monkey has passed 
into that of the man. 
