MENTAL LIFE OF APES AND MONKEYS 279 
screws; and when he was chained in a new place he investi- 
gated for hours the new fastenings of his chain. The 
development of this intellectual interest—if we may call it 
such—in regard to objects affords an opportunity for further 
improvement; it leads not only to the acquisition of new 
knowledge, but to training in discrimination and practical 
judgment. 
BIBLIOGRAPHY 
BreuM, A. KE. Thierleben, ’76. 
Corr, E. D. Note on Intelligence in Monkeys. Am. Jour. Sci. and 
Arts (3), 4, 147, ’72; also in Ann. Mag. Nat. Hist. (4), 10, 229, 
72. 
Cuvier, F. Description d’un Orang-Outang, et Observations sur 
ses Facultés Intellectuelles. Ann. du Mus. Hist. Nat., 16, 1808. 
Darwin, C. R. Descent of Man, N. Y., ’74. 
GARNER, R. L. The Speech of Monkeys, N, Y., 792. 
Apes and Monkeys, their Life and Language, Boston, ’00. 
Haccerty, M. E. Imitation in Monkeys. Journ. Comp. Neur. 
Psych., 19, 337, ’09. Imitation in Monkeys. Century Mag. 
09. 544. 
HarTMANN, R. Anthropoid Apes, N. Y., ’85. 
HrrscuuaFr, L. Der Schimpanse Konsul; ein Beitrag zur ver- 
gleichenden Psychologie. Zeit. f. pid. Psychol., 7, 1, ’05. 
Hosuyouss, L. T. Mind in Evolution, London, ’01. 
Kinnaman, A. J. Mental Life of two Macacus Rhesus Monkeys in 
Captivity. Am. Jour. Psych., 13, 98 and 173, ’02. 
Mosius, K. Zur Psychologie des Schimpanse. Zool. Garten, 8, 
279, ’67. 
Romanes, G. J. Animal Intelligence, N. Y., ’83. 
On the Mental Faculties of the Bald Chimpanzee, Anthropithecus 
calvus. Proc. Zool. Soc., London, ’89, 316. 
SHEPHERD, W. Some Mental Processes of the Rhesus Monkey. 
Psychol. Rev. Monogr. Suppl. 12, No. 52, ’10. 
Soxotowsky,A. Beobachtungen fiber die Psyche der Menschenaffen. 
Frankfurt, ’08. 
THORNDIKE, E. L. The Mental Life of the Monkeys, Psychol. Rev. 
Monogr. Suppl: 3, No. 15, ’01. 
The Intelligence of Monkeys. Pop. Sci. Mon., 54, ’01. 
