THE CLASSIFICATION OF BACTERIA 55. 



Mycobacterium Lehmann-Neumann 



I. Stain with basic aniline dyes, and easily decolorized by mineral acids when, 

 stained with carbol fuchsin. 



A. Grow well on nutrient gelatin. Gelatin liquefied very slowly or merely 



softened. 



1. Stain by Gram's method. Swine Erysipelas Group. 



2. Not; stained by Grarii's^methdd.,; Glanders Group. ■ 



B. Little or no growth in- ordinary, nutrient gelatin. 



1. Grow well in nutrient bouillon at body temperatures. 



a. Stained by Gram's method. Rods cuneate — clavate — irregu- 

 larly swollen. Diphtheria Group. 



2. No growth in nutrient bouillon or on ordinary culture media. Rods. 



slender, tubercle-like. 



a. Stain by Gram's method. Leprosy Group. 



b. Do not stain by Gram's method. Influenza Group. 



3. No growth in nutrient bouillon or on ordinary culture media. Rods 



variable. Root-tubercle Group. 

 II. Not stained with aqueous solutions of basic aniline dyes ; not easily decol- 

 orized by acids. Tubercle Group. 



COCCACEAE 

 Cells in their free- -conditwn globular, becoming slightly elongated before- 

 division. Cell division in one, two, or three directions of space. 



A. Cells without flagella. 



1. Division in only one direction of space. Streptococcus Billroth,. 



P- 55- 



2. Division in two directions of space. Micrococcus Hallier, p. 71. 



3. Division in three directions of space. Sarcina Goodsir, p. 109. 



B. Cells with flagella. 



1. Division in two directions of space. Planococcus Migula, p. 114. 



2. Division in three directions of space. /Va^^ij-amKa Migula, p. 115. 



STREPTOCOCCUS (Billroth) 



Untersuch. uber die Vegetationsformen von Coccobacteria septica, 1874. 

 Leuconostoc, Van Tieghem : TraiW de Botanique, 1883. 



Cells round to slightly elongated. In short chains of only a few elements, or 



in long chains containing several hundred. Never in threes, tetrads, or 



irregular clusters. Division in only one direction of space. Non-tnotile^ 



Single chains or cficci may be surrounded by a capsule. 



