GENERAL SYSTEMATIC BACTERIOLOGY 39 



Section 2. Ophidomonas (Ehr.) Hansg. 

 b. Cells not spirally bent. 



Subfamily Microbacteria Cohn 



1. Cells elongate Genus Bacillus Cohn 



(a) Without sulphur inclusions. 



Section 1. Eubacillus Hansg. 



(b) With sulphur inclusions. 



Section 2. Chromobacillus Hansg. 



2. Cells short Genus Bacterium Ehrb. 



II. Cells encysted Family Myconostocaceae Hansg. 



One genus only Genus Myconostoc Cohn 



C. Cells spherical Order III. Sphaerobacteria 



One family only Family Mycococcaceae 



a. Cells encysted Subfamily Cystococcaceae Hansg. 



1. Cells irregularly grouped. 



a. Each cell or each group of a small number of cells in common 



cyst Genus Hyalococcus Schroter 



b. As (a), but with many -layered cysts. 



Genus Leu^ocystis. Schroter 



c. Cell families of very numerous individuals in a common cyst. 



Genus Ascococcus Billroth 



2. Cells regularly grouped. 



a. Cells in chains, encapsulated. 



Genus Leuconostoc Van Tieghem 



b. Cells in twos and fours, in many layered capsules. Cells 



elongate Genus Mycoihece. Hansg. 



Metschnikoff (1888) suggested the generic name Sclerothrix for the 

 acid fast bacteria of the type of the bacillus of tuberculosis. Evidently 

 he was not aware of the previous use of this name by Kuetzing (1849) 

 for a genus of algae. 



Bollinger (1888) suggested the name Botryomyces as a designation 

 for the genus of cocci found in the socalled botryomycomata of the horse. 

 In this year Gamaleia used the name Coccobacillus avicidus for the 

 organism of chicken cholera. 



Beijerinck (1889) proposed the generic designation Photohacterium 

 to include all of the photogenic forms. This is perhaps the first genus 

 of bacteria proposed based upon a physiologic character. Frank (1889) 

 used Rhizobium as the generic name for the bacteria found in the root 

 nodules of leguminous plants. Spirohacillus was named by Metschnikoff 

 in the same year. 



Probably the most elaborate classification of bacteria based entirely 

 upon morphologic characters is that of De Toni and Trevisan (1889) 

 published in Saccardo's.Sylloge Fungorum. ]Many new genera were 



