migula's classification of bacteria 



a. Flagella distributed over 



the whole body 2. Bacillus. 



d. Flagella polar 3. Pseudomonas. 



3. Spirillacece . 



Cells rigid, not snakelike or flex- 

 uous. 



a. Cells without organs of 



motion i. Spirosoma. 



b. Cells with organs of mo- 

 tion (flagella). 



1. Cells with one, very 

 rarely 2-3 polar fla- 

 gella 2. Microspira. 



2. Cells of polar flagella, 



in tufts of from 5-20-- 3. Spirillum. 



Cells flexuous 4. Spirocha^ta. 



4. Chlamydobacteriaceae. 



Cell contents without granules 

 of sulphur. 



a. Cell threads unbranched. 



1 . Cell division always onh* 



in I plane i. Streptothrix. 



2. Cell division in 3 planes 

 previous to the forma- 

 tion of conidia. 



a. Cells surrounded by a 

 very delicate, scarce- 

 ly visible sheath 



(marine) 2. Pliraginidiotlirix 



b. Sheath clearly visible 



(in fresh water) 3. Crenothrix. 



21 



