418 University of California P uhUcations in Botany [Vol.5 



LITEEATUEE CITED 



Atkins, W. E. 



1916. Some receut researches in plant physiology, p. 64. 



Balls, "W. 



1911. Cotton investigations iai Egypt, 1909-1910. Cairo Sci. Jour., vol. o, 

 p. 221. 



Becquerel, W. 



1907. Sur un cas remarquable tie autotomie de pedoncle floral de tabac 

 provoque par le traumatism de la corolla. C.-R. Acad. Sci. Paris, 

 vol. 245, p. 936. 



Brown, H. T., and Escomb, F. 



1902. The influence of varying amounts of carbon dioxide in the air on 

 photosynthetic process of leaves and the mode of gro\\i:h. Proc. 

 Eoy. Soc. London, vol. 70, p. 97. 



CORREXS, C. 



1899. Vermehrung der Laubmoose. Jena, 1899. Quoted from Lloyd (1914a). 



East, E. M. 



1915. Phenomenon of self -sterility. Am. Nat., vol. 49, p. 77. 



Fitting, H. 



1909. Die Beinflussung der Ochideenbluten durch die Bestaubung und dureh 

 andere Umstande. Zeitschr. Bot., vol. 1, p. 1. 



1911. Untersuchung iiber die vorzeitige Entblatterung von Bliiten, Jahrb. 

 ■wiss. Bot., vol. 49, p. 187. 



GooDSPEED, T. 11., and Kendall, J. X. 



1916. An account of the mode of floral abscission in the Fj species hybrids 



of Nicotiana. Univ. Calif. Publ. Bot., vol. 5, no. 10, p. 293. 



GoRTNER, E. A., and Harris, J. A. 



1914. On axial abscission of Impatiens SuJtani as the result of traumatic 

 stimuli. Am. Jom*. Bot., vol. 1, p. 48. 

 Hannig, E. 



1913. Untersuchung iiber das Abstossen von Bliiten u.s.w., Zeitsehr. Bot., 

 vol. 5, p. 417. 



HOEHNEL, F. R. 



1878. Ueber den Ablosungvorgang der Zweige einiger Holzegewachse und 



seine antomischen Ursachen. MitteU. forstl. Versuch. Oester., vol. 1, 



no. 3; vol. 3, no. 2. 

 Kubart, B. 



1906. Die organische Ablosung der KoroUen uebst Bemerkung iiber die 



Molsche Trennungschichte. S.-B. Akad. "Wien, Math-nat. Kl., vol. 



115.1, p. 1491. 

 Lloyd, F. 



1914a. Abscission in flowers, fruits and leaves. Ottawa Nat., 1914. 



1914&. Injury and abscission in Impatiens Sidtani. Quebec Soc. f. protection 



of plants, 1914, p. 72. 

 1916a. Abscission in Mirabilis JaJapa. Bot. Gaz., vol. 61, p. 213. 

 1916&. Abscission of flower buds and fruits in Gossypium and its relation to 



environmental changes. Trans. Eoy. Soc. Canada, vol. 10, p. 55. 



