

iration of higher plants, germinating seeds, et -j.l 

 Jhen the accumulation is sufficient to poison the organi. , 

 respiration stops and death ensues. From this viewpoint 

 anaerobes are merely organisms which are able to with- 

 stand the intermediate products of the respiration process, 

 or what comes to the same thing, which can so modify their 

 metabolism as to produce intermediate products which are 

 harmless. The facultative anaerobes make this adjustment 

 easily and are able to live either under conditions of 

 oxidation of their intermediate products by atmospheric 

 oxygen or in situations where oxygen is absent, where 

 such oxidation is impossible and where, therefore, the 

 intermediate products accumulate. If the intermediate 

 products could be removed or otherwise disposed of, all 

 organisms would be facultative anaerobes. That some steps 

 in this direction are possible is indicated by the fact 

 that the food supply and other surrounding conditions alter 



1. See references on anaerobic respiration on 

 page// , note / , also: Brefeld,- Landw. Jahrb. 5j_ 327 

 (187C); Haze,- C. R. 128:1608 (1899), Ann. Inst. Pasteur 

 14 : 350-368 (1900); Godlewski and Polzeniusz,- Ann. Agr:n. 

 28 : 151-165 (1902); I.Iatruchot and Llolliard,- ?.ev. gen. 

 bot. 15: 193 (1903); Nabokikh,- Zhar. Opyt. Agron. 5: 

 305-315 (1904); Stoklasa,- Zeits. physiol. Ghem. 4_8: 214 

 (1906); ralladin and Lostytschev/,- Ber. deut. bot. Ges. 



: 51 (1907); Ivanov,- Ber. deut. bot. Ges. 29: 6£2- 



(1912 . 



