NOTES FROM THE SCOTTISH ZOOLOGICAL PARK 189 
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THE SCOTTISH ZOOLOGICAL PARK, 471.5% 
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Basoon INTELLIGENCE.—In this column, in the issue (on 
March-April, a note was contributed on the behaviour of a Baboon 
which used an open knife he had taken possession of to lift, in a 
very skilful manner, a large number of the tiles covering the floor 
of his cage. The same animal has given other demonstrations of 
his intelligence, and one the other day appeared to the writer 
almost as striking as that formerly noted. Some structural altera- 
tions were being carried out in the house near his cage, and, 
noticing a piece of stick lying near, the writer picked it up and 
passed it in to the Baboon’s cage to see what he would do with it. 
He took it up at once and examined it thoughtfully for some time, 
then turned to the door leading to an inner sleeping place and put 
the end of the stick (which was about eighteen inches long by 
some two inches wide and perhaps three-quarters of an inch thick) 
into the space between the outer sill of the doorway and the closed 
iron door, and, holding the other end of the stick, began to pull. 
“Surely,” said an onlooker, ‘‘he does not understand the principle 
of the lever!” It seemed, however, that he did! The space in 
which the stick was inserted was about three or four inches wide, 
and did not afford a good grip for the stick, so he withdrew it and 
again contemplated alternately the piece of stick and the cage 
surrounding him. Ina minute or two he went to a radiator which 
is placed against the back wall of the cage, and inserted the end 
of the stick between the top of the radiator and a wooden shelf 
fixed close above it. Into this space the stick just fitted nicely, and 
as soon as he got it placed, he pulled downwards with all his 
strength on the end. The stick was strong, however, and so were 
the fixings of the radiator and the shelf above, and not being able 
to move anything by pulling, the Baboon got up on to the shelf and 
bore all his weight on the end of the stick, jerking his body in an 
effort to break something. He tried his strength at it both above 
and below for some little time, and then finding that everything 
resisted him, he took out the stick and, reverting to the method 
of breaking things more characteristic of his tribe, began to tear 
splinters from it with his teeth. Although, in this case, he achieved 
nothing, the action seemed to show that the animal appreciated the 
119 AND 120 2A 
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