SOME RESULTS OF EXPERIMENT 145 
of thought,” but which, on closer observation, was clearly seen 
to be the result of intelligence in the restricted sense of the 
Fic, 21.—Fox-terrier lifting the latch of a gate. 
term. The dog released the lever-latch of a yard door. “ At 
first he raised his paws to the door and scratched violently, 
manifesting various signs of impatience. His scratches. which 
L 
