15 



the amount of oxygen required for respiration and the 

 length of time that anaerobic conditions can be endured, 

 both by lower organisms and by the higher plants. 

 Specific experimental attack oh this problem might lead 

 to much greater extensions of facultative anaerobiosis. 

 It seems not improbable that differences in the capacity 

 to dispose of intermediate respiration products may 

 explain the very different respiration rates of differ- 



1. On higher plants see authors cited on 

 page // , note / , especially Palladin and llabokikh, 



also: Godlewski,- Bull. Acad. sci. Gracovie : 



(1904); Lehman,- Biochem. Zeits. : 588 (1915). 

 On the effects of food materials on anaerobiosis of 

 bacteria see: liborius,- Zeits. fur Hyg. 1: 172 (188G); 

 Kitasato and V/eyl,- Zeits. fur Hyg. 8_: 49, 9: 17 

 (1890); ./inogradsky,- G. H. 116: 1585 (1893), 113: 

 555 (1894), .arch, sci. biol. Inst. med. exp. ot. 

 Petersb. 2: 297 (1895); Kedrowsky,- Zeits. filr. Hyg. 

 20; (1895); Iiitt,- Gentbl. Bakt., 17: 1G8 (1895); 

 -■shall,- Microbiology, 2nd ed. pp. (191G). 



