INTELLIGENCE OF CEBUS. 497 



movements were unrestrained, and generally monkey-like ; 

 but with her he was always as gentle as a kitten : he 

 appeared to know that her age and infirmities rendered 

 boisterousness on his part unacceptable. 



I returned the monkey to the Zoological Gardens at 

 the end of February, and up to the time of his death in 

 October 1881, he remembered me as well as the first day 

 that he was sent back. I visited the monkey-house about 

 once a month, and whenever I approached his cage he saw 

 me with astonishing quickness indeed, generally before 

 I saw him and ran to the bars, through which he thrust 

 both hands with every expression of joy. He did not, 

 however, scream aloud ; his mind seemed too much occu- 

 pied by the cares of monkey-society to admit of a vacancy 

 large enough for such very intense emotion as he used to 

 experience in the calmer life that he lived before. Being 

 much struck with the extreme rapidity of his discernment 

 whenever I approached the cage, however many other 

 persons might be standing round, I purposely visited the 

 monkey-house on Easter Monday, in order to see whether 

 he would pick me out of the solid mass of people who fill 

 the place on that day. Although I could only obtain a 

 place three or four rows back from the cage, and although 

 I made no sound wherewith to attract his attention, he 

 saw me almost immediately, and with a sudden intelligent 

 look of recognition ran across the cage to greet me. 

 When I went away he followed me, as he always did, to 

 the extreme end of his cage, and stood there watching my 

 departure as long as I remained in sight. 



In conclusion, I should say that much the most 

 striking feature in the psychology of this animal, and the 

 one which is least like anything met with in other animals, 

 was the tireless spirit of investigation. The hours and 

 hours of patient industry which this poor monkey has 

 spent in ascertaining all that his monkey-intelligence 

 could of the sundry unfamiliar objects that fell into his 

 hands, might well read a lesson in carefulness to many a 

 hasty observer. And the keen satisfaction which he dis- 

 played when he had succeeded in making any little dis- 

 covery, such as that of the mechanical principle of the 



