196 COMMITTEE REPORT 



(a) That French, English or German may be substituted for 

 Latin in the diagnosis of bacterial species. 



(b) That the date of publication of the third edition of Zopf's 

 Spaltpilze (1883) be considered the beginning of bacterial no- 

 menclature for the purpose of determining priority, with the ex- 

 ception of a definite list of genera conservanda. 



(c) That such of the approved generic names specified above 

 as may be found to require such action be recognized as genera 

 conservanda in bacterial taxonomy. 2 



III. SUGGESTED OUTLINE OF BACTERIAL CLASSIFICATION 



THE CLASS SCHIZOMYCETES 



Minute, one-celled, chlorophyll-free, colorless, rarely violet-red 

 or green-colored plants, which typically multiply by dividing in 

 one, two or three directions of space. The cells thus formed are 

 usually spherical, cylindrical, comma-shaped, spiral or filamen 

 tous and are often united into filamentous, flat, or cubical ag- 

 gregates. Filamentous species often surrounded by a common 

 sheath. The cell plasma generally homogeneous without a mor- 

 phologically differentiated nucleus. Reproduction by simple 

 fission. In many species resting bodies are produced, either en- 

 dospores or gonidia. Cells may be motile by means of flagella. 



A. ORDER MYXOBACTERIALES 3 



Cells united during the vegetative stage into a pseudoplasmo- 

 dium which passes over into a highly-developed cyst-producing 

 resting stage. 



B. ORDER THIOBACTERIALES 3 



Cells free or united in elongated filaments. Typically water 

 forms, not cultivable on ordinary media. Life energy derived 

 mainly from oxidative processes. Cells typically containing 

 either granules of free sulphur or bacterio-purpurin or both, usu- 

 ally growing best in the presence of hydrogen sulphide. 



a The Society of American Bacteriologists took favorable action on these reso- 

 lutions at its meeting December 29, 1919. 



8 These first three orders are included briefly to give the complete setting of the 

 fourth and fifth with which we are primarily concerned. 



