458 BOTANICAL GAZETTE [JUNE 
The proteo-bacteria would naturally include a large number of 
species, among them the nitrate, ammonia, and amino assimilating 
species. While objections will probably be raised against the crea- 
tion of this very general group, it must be recognized that the 
terms ammono-proteo or nitra-proteo are more consistent than 
‘‘nitratassimilierende” or ‘‘ammonassimilierende.’’ Moreover, these 
terms should supplement the term ‘‘proteofication,’ a very com- 
pact and logical designation of the transformation of various nitro- 
gen compounds into protein. 
The azoto-bacteria should include all of the nitrogen-fixing 
species. According to the proposed terminology, they would con- 
sist of the azo-bacteria, that is, the non-symbiotic nitrogen-fixing 
bacteria (freilebende stickstofffixierende Bakterien) and the rhizo- 
bacteria, that is, Ps. radicicola. The azo-bacteria would in their 
turn consist of Clostridium Pastoriannum, Azotobacter, and miscel- 
laneous species already known or still to be discovered. The pro- 
posed classification is elastic enough to allow the presence in the 
azo group of azo-ammono- or azo-nitro-bacteria, should it ever 
be definitely shown that elementary nitrogen may be directly 
transformed by certain species into ammonia or nitrate. No 
serious objection should be raised against the proposed use of 
azoto, azo, and rhizo. They are not only an improvement on the 
unwieldy terms at present in use, but are quite in keeping with the 
term azotofication, whose acceptability will hardly be disputed. 
urning now to the terms de-ammono, de-nitro, de-proteo, and 
de-azoto, we find them to be the opposites of the corresponding 
ammono, nitro, proteo, and azoto. Just as ammono designates 
the appearance of ammonia, so de-ammono designates the nade 
appearance of ammonia. Now ammonia may disappear by being 
converted into amino-compounds, peptone, or protein; hence, re 
ammono-amino, de-ammono-pepto, de-ammono-proteo. Also 
this, as in every other case, the first part of the compound term 
designates the initial and the second part the final product. The 
terms de-ammono-nitri and de-ammono-nitra were not included 
in this group, because they properly belong to the nitro group 
(ammono-nitri and ammono-nitra). 
The meaning of de-nitro has been modified to. correspond to 
