54 



LABORATORY BACTERIOLOGY 



83. Migula's classification of bacteria. 



FAMILIES 



L Cells globose in a free state, not elon- 

 gatins; in any direction before divi- 

 sion into I, 2, or 3 planes . i. CoccACEiE 

 II. Cells cylindrical, longer or shorter, and 

 only dividing in i plane, and elon- 

 gating to twice the normal length 

 before the division. 



1. Cells straight, rod-shaped, without 



sheath, nonmotile, or motile by 

 means of flagella . 2, 



2. Cells crooked, without sheath . .3, 



3. Cells inclosed in a sheath 



4. Cells destitute of a sheath, united 



into threads, motile by means of 

 an undulating membrane . 



{" 



bacteriace.e 



SpirillacetI'; 



Chlamydobacte- 



RIACE.E 



5. BeGGIATOACEjE 



1. GENERA BELONGING TO THE FAMILY COCCACE^ 



Cells without organs of motion. 

 a. Division in i plane 

 i. Division in 2 planes . 

 c. Division in 3 planes . 



Cells with organs of motion. 

 a. Division in 2 planes 

 i. Division in 3 planes 



1. Streptococcus 



2. Micrococcus 



3. Sarcina 



Planococciis 

 Pla7iosarcina 



2. GENERA BELONGING TO THE FAMILY BACTEKIACE^ 



Cells without organs of motion . i. Bacterium 



Cells with organs of motion (flagella). 



a. Flagella distributed over the whole 



body . . .2. Bacillus 



b. Flagella polar . . . . .3. Pseiidoinonas 



,3. GENERA BELONGING TO THE FAMILY SPIRILLACE^ 



Cells rigid, not snakelike or flexuous. 



a. Cells without organs of motion . i. Spirosoma 



