LIST OF REFERENCES 



(1) Akeley, Carl E.: In brightest Africa. New York, 1923. 



(2) Bradley, Mary Hastings : On the gorilla trail. New York, 1922. 



(3) Cunningham, Alyse : A gorilla's life in captivity. Zool. Soc. Bull., 



1921, 24, 118-124. 



(4) Garner, R. L.: Apes and Monkeys: Their Life and Language. 



Boston, 1900. 



(5) Hamilton, G. V.: Study of perseverance reactions in primates 



and rodents. Behavior Monographs, 1916, 3, no. 2. 



(6) Hamilton, G. V.: A study of sexual tendencies in monkeys and 



baboons. Jour. Animal Behavior, 1914, 4, 29; 318. 



(7) Hornaday, William T. : The Minds and Manners of Wild Animals. 



New York, 1922. 



(8) Hrdlicka, Ales : Antropometry. Wistar Institute, Philadelphia, 



1920, pp. vi + 163. 



(9) KoEHLER, Wolfgang: Intelligenzpriifungen an Menschenaffen. 



Springer, BerHn, 1921, S. 194. 

 For publication of results from Canary Island Station see Abh. d. 

 konig. Preuss. Akad. d. Wissensch., 1915-1918. 



(10) MoNTANi;, Louis : A Cuban chimpanzee. (English translation by 



Rossy, C. S.) Jour. Animal Behavior, 1916, 6, 330-333. 



(11) RoTHMANN, Max: Ueber die Errechtung einer Station zur 



psychologischen und hirn-physiologischen Erforschung der 

 Menschenaffen. Berliner klin. Wochenschr., 1912, 42, 1-13. 



(12) Yerkes, Robert M.: The mental life of monkeys and apes: 



A study of ideational behavior. Behavior Monographs, 1916, 

 3,no. 1. 



157 



