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 ZOPF 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 (HALLIER ) 



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. 



X Cells rigid, not snake-like 

 or flexuous. 



a. Cells without organs of 



motion (flagella), - 9. Spirosoma MIGULA. 



b. Cells with organs of 



motion (flagella). 



1. Cell with 1, very rare- 

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



- 6. Bacterium EHRENB. 



7. Bacillus COHN. 



8. Pseudomonas MIGULA. 



