180 Bacteriologie. 



II faut y voir une importante presomption en faveur de la recepti- 

 vite de l'homme lui-meme au bacille d'origine bovine. 



M. Radais. 



Lipman, J. G„ Suggestions concerning the terminology 

 of soil bacteria. (Bot. Gaz. LI. p. 454—460. Jul. 1911.) 



The proposed arrangement of some of the more important groups 

 of soil bacteria is as follows: 



Groups of soil bacteria arranged in accordance 

 with their pl^siological functions. 

 Ammono-bacteria De-ammono-bacteria 



amino- -amino 



pepto- -pepto 



proteo- -proteo 



-nitri 

 -nitra 

 Nitro-bacteria De-nitro-bacteria 



nitri- -nitri 



lammono- -ammono 



nitra) -nitrioxy 



/nitri- -nitraoxy 



Proteo-bacteria De-proteo-bacteria 



ammono- -pepto 



amino- -amino 



pepto- -ammono 



proteo- 

 nitri- 

 nitra- 

 Azoto-bacteria De-azoto-bacteria 



azo- amino-azo 



rhizo- ammono-azo 



nitra-azo 

 nitri-azo 

 Sulpho-bacteria De-sulpho-bacteria 



sulphid- -sulphite 



thio- -sulphid 



Ferri-bacteria 

 ferro- 



Definitions. 

 Ammono-bacteria. — Organisms capable of producing ammonia 

 out of nitrogen Compounds. 



Nitro-bacteria. — Organisms capable of oxidizing nitrogen Com- 

 pounds to nitrites, nitrates, or both. 



Proteo-bacteria. — Organisms capable of transforming nitrogen 

 Compounds into protein. 



Azoto-bacteria. — Organisms capable of changing elementary 

 into combined nitrogen. 



De-ammono-bacteria. — Organisms capable of transforming am- 

 monia into nitrogen Compounds other than nitrites or nitrates. 



De-nitro bacteria. — Organisms capable of reducing nitrates to 

 nitrites, ammonia, nitrous or nitric acid. 



De-proteo-bacteria. — Organisms capable of transforming protein 

 into more simple cleavage products. 



De-azoto-bacteria. — Organisms capable of liberating elementary 

 nitrogen from nitrogen Compounds. 



