GENERAL BACTERIOLOGY 



89 



MIGULA'S SYSTEM OF CLASSIFICATION. 



I. Cells globose in a free state, not 

 elongated in any direction be- 

 fore division into 1, 2, or 3 

 planes. Coccaceae Zopp emend. Mig. 



A. Cells without organs of mo- 

 tion. 



a. Division in one plane, 

 6. Division in two planes, 



c. Division in three planes. 



1. Streptococcus Billroth. 



2. Micrococcus (Halliee ) 



COHN. 



3. Sarcina Goodsir. 



4. Planococcus Migula. 



5. Planosarcina Migula. 



II. Cells cylindrical, longer or 

 shorter, and only divided in 

 one plane, and elongated to 

 twice the normal length be- 

 fore the division. 



(1) Cells straight, rod-shaped 



without sheath, non- 

 motile or motile by 

 means of flagella. Bacteriaceae Migula. 



A. Cells without organs of 



motion, 



B. Cells with organs of mo- 



tion (flagella). 

 a. Flagella distributed over 



the whole body, 

 6. Flagella polar, 



(2) Cells crooked, without 



sheath. Spirillaceae Migula. 



A. Cells rigid, not snake-like 

 or flexuous. 

 a. Cells without organs of 



motion (flagella), 9. Spirosoma Migula. 



6. Cells with organs of 

 motion (flagella). 



1. Cell with 1, very rare- 

 ly 2-3 polar flagella, 10. Microspira Schroetee. 



6. Bacterium Ehrenb. 



7. Bacillus Cohn. 



8. Pseudomonas Migula. 



