216 Animal Intelligence 
tuition, z.e. he on the floor by me, the box in front. In this 
trial and in a five-minute trial inside his cage he failed to 
open the door or to differ in any essential respect from his 
behavior before tuition. 
No. 1 saw me do g different acts and No. 3, 7, which they 
had failed of themselves to do.!' After from 1 to 40 chances 
to imitate me they still failed to operate at all 11 of these 
mechanisms. In the case of 3 out of 5 that were worked 
the act was not the sameas that taught. No.1, who saw 
me pull a nail out by taking the end of it and pulling the nail 
away from the box, himself put his hand round the nail and 
wriggled it out by pulling his hand back and forth. No. 3, 
who saw me pull a bolt up with my fingers, succeeded by 
jerking and yanking the door until he shook the bolt up. 
He saw me pull a hook out of an eye, but he succeeded by 
pulling at a bar to which it was attached. In the case of 
one of the two remaining acts (No. 3 with nail chute) the act 
was done once and never again, though ample opportunity 
was given and tuition continued. It could, therefore, 
hardly have been due to an idea instilled by the tuition. 
The remaining case, No. 1, with loop, must, I think, be at- 
tributed to accident, especially since No. 3 failed to profit 
1 The acts and the number of chances to see me do each and the results 
were as follows; details can be found on the table on page 226. F = failed 
after tuition. 
No.1.—MM a1F No. 3. — Theta 25 did in 3.00, 
Theta 5F QQ 40F 
QQ 10 F Gamma 30 F 
RR 4F 
WwW g did in .22 Epsilon 25 F 
Delta i5F QQ (ff) 5F 
Epsilon 4o F QQ (c) 20 F, did in 1.30, F, 5 F, 
5F 
QQ (f) 15 F QQe 5 F, did in 2.00 
QQ (c) x did in 2.20 
