CONTINUOUS PROCESS OF ADJUSTMENT 123 



1. The Struggle for Existence 



DARWIN, CHAS. 



1876. Struggle for Existence, pp. 43-61. In On the Origin 

 of Species, 6th ed. New York. (See Figures 2 and 

 3.) 

 BROOKS, W. K. 



1893. Salpa in its Relation to the Evolution of Life. Studies 

 Biol. Lab., Johns Hopkins Univ., Vol. V, pp. 129- 

 211. See particularly pp. 129-170. 

 A remarkable and little known paper on the struggle 



for existence in the sea. 

 FORBES, S. A. 



1887. The Lake as a Microcosm. Bull. Sci. Assoc. of Peoria, 



Illinois, 1887, pp. 77-87. Reprinted, with revisions, 

 as from the Bull. Peoria Sci. Association, 1887, 

 pp. 1-15. 



An excellent picture of the struggle for existence in a 

 lake, where the life is considered as a microcosm or 

 social community. 



1880. On Some Interactions of Organisms. Bull. 111. State 

 Lab. Nat. Hist., Vol. I, No. 3, pp. 1-18. Second 

 Edition. 1903. 



1882. The Ornithological Balance- Wheel. Trans. HI. State 



Hort. Soc. for 1881, N. S., Vol. XV, pp. 120-131. 



1883. The Regulative Action of Birds upon Insect Oscilla- 



tions. Bull. HI. State Lab. Nat. Hist., Vol. I, No. 6, 

 pp. 3-32. 



These three papers are very important for their dis- 

 cussion of the dynamic character of the struggle 

 among organisms, and how the balance of nature is 

 maintained. 



1888. On the Food Relations of Fresh- Water Fishes: a 



Summary and Discussion. Bull. 111. State Lab. Nat. 

 Hist., Vol. II, pp. 475-538. 



A summary of the food of fishes, based upon a detailed 

 study of the contents of their stomachs. 



