52 Synopsis of the Bacteria and Yeast Fungi. 



74. S, violaceum, Warming (I.e., Resume", p. 5). 



.,:/ Cells either crescent-shaped (and so 



without a complete turn) or with i or i^ 

 s Pi ra l> broadly rounded at the ends, with 

 a flagellum at each. Cell-contents violet, 

 with a few sulphur granules. Height of the 

 spiral 8-10 /*, diameter 1-1*5 /*> thickness 

 of the cells 3-4 /*. (Fig. 52.) 



violaceum, X 660 T , . . , 



(after Warming). *B brackish water. 



75. S. Rosenbergii, Warming (I.e., Resume, p. n). 



Cells with i or i^ turn, 4-12 /x long, 

 1*5-2-6 p. thick, colourless, but with ex- 

 tremely numerous strongly refringent sul- 

 phur granules. Spirals 6-7*5 /" high, of 

 very varied diameter, which amounts at 

 the most to half of the height. Moving 

 actively and in the most varied fashion, 



Fig. *,?,. Spirillum 



Rosenbergii, x 660 but, as it seems, without flagella. (Fig. 



(after Warming). \ 



In brackish water. 



76. S. atteimatum, Warming (I.e., Resume", p. 25). 

 Cells strongly attenuated at the ends, usually with 3 



spirals. The middle 

 spiral is large and close 

 (height about n /z, dia- 

 meter 6 /A), the end spirals 

 Fig. ^-spirillum attenuatum, x 660 are elongated (10 /z high, 



(after Warming). 2 ^ j n diameter ^ Thick . 



ness of the cells 2 or i *2 /A. (Fig. 54.) 

 In sea-water. 



