118 ANIMAL ECOLOGY 



REYNAUD, G. 



1900. The Laws of Orientation Among Animals. Smith- 

 sonian Report for 1898, pp. 481-498. 



RlLEY, C. F. C. 



1912. Observations on the Ecology of the Dragon-Fly 



Nymphs : Reactions to Light and Contact. Ann. 

 Ent. Soc. Amer., Vol. V, pp. 273-292. 



SCHEFFER, T. H. 



1905. The Cocooning Habits of Spiders. Kans. Univ. Sci. 



Bull., Vol. Ill, pp. 85-114. 

 SEITZ, A. 



1891. Allgemeine Biologic der Schmetterlinge. Zool. Jahrb., 

 Abth. Syst. Geog. Biol. der Thiere, Bd. V, pp. 281- 

 343. 



SETON, ERNEST THOMPSON. 



1909. Life Histories of Northern Animals. Vol. I, pp. 673, 



and Vol. II, pp. 677-1267. New York. 

 Valuable for life histories and habits. Extensive 

 bibliography. 



SEVERIN, H. H. P. and H. C. 



1911. An Experimental Study on the Death-Feigning of 



Belostoma (= Zaitha Aucct.) flumineum Say and 



Nepa apiculata Uhler. Behavior Monographs, Vol. 



I, No. 3, pp. 1-44. 

 SHELFORD, V. E. 



1908. Life-Histories and Larval Habits of the Tiger Beetles 



(Cicindelidce). Jour. Linn. Soc. Zool., Vol. XXX, 



pp. 157-184. 

 SHELFORD, V. E., and ALLEE, W. C. 



1913. The Reactions of Fishes to Gradients of Dissolved 



Atmospheric Gases. Jour. Exp. Zool., Vol. XIV, 

 pp. 207-266. 



The reaction of fish to oxygen and carbonic acid; 

 the latter is considered the best single index to the 

 environment. 



