104 THE SPEECH OF MONKEYS. 



they were very much like the canines. I have 

 made frequent tests of the power of their senses, 

 and am prepared to say with certainty that such is 

 not the case. When I visit the park I frequently 

 enter at Sixty-fourth Street and Fifth Avenue, 

 at which place there is a flight of stairs leading 

 from the street down to a large plaza in front of 

 the old armory; and something more than a 

 hundred feet from the foot of the stairway, and 

 nearly at right angles to it, is a window opening 

 into the monkey-house near the cage occupied by 

 these particular monkeys. When I descend the 

 stairway and come within view of this window, 

 they frequently see me as I reach the plaza, and 

 the keeper always knows of my approach by the 

 conduct of the monkeys, who recognize me the 

 instant I come in sight at that distance. At 

 other times I have approached the house from 

 another direction and come within a few feet of 

 their cage, where I have stood for some time in 

 order to ascertain whether they were aware of 

 my presence, and on a few occasions have slipped 

 into the house with the crowd, and they did not 

 detect my presence except by sight. It is evi- 

 dent, if they depended upon the sense of smell, 

 that they would have discovered my presence 



