96 MORPHOLOGY OF THE BACTERIA. 



M. Warming has recently described three new species 

 found upon the coast of Denmark : 



Sp. violaceum, height 8 to 10 /x, diameter 1 to 1.5 /x, thick- 

 ness 3 to 4 fi ; a ciliuin at each extremity. 



Sp. Rosenbergii, height of helix 6 to 7.5 /*, thickness 1.5 to 

 2.6 /x. 



Sp. attenuatum, body very attenuated at the two extrem- 

 ities, without a cilium. 



We give below some details concerning the 

 other colorless Schizophytes : 



g. Sarcina, Goods. 



The Sarcina, which it is useless to describe 

 here, can be considered as bacteria in which 

 the division occurs by two perpendicular par- 

 titions in such a manner that multiplication 

 takes place in two directions. 



Sarcina is very nearly allied to Merismopedia, 

 from which it only differs by the absence of 

 chlorophyll; its siliceous skeleton allies it with 

 the diatoms. 



g. Ascococcus, Billr. 



Cells hyaline, small, globular, closely united in 

 globular or oval families, irregularly lobed and lobu- 

 lated, surrounded by a thick gelatinous envelope, 

 cartilaginous, forming a soft membrane, flaky, easily 

 separating. 



A. Billrothi, Cohn. 



Families in masses of 20 to 160 p, surrounded by a thick 

 membrane of 15 \i. 



In a solution of tartaric acid exposed to the air. 



g. Myconostoc, Cohn. 



Filaments very slender, colorless, folded, rolled up 

 in a mucous substance, united in very small globules. 



