Cryptococcus ; Sarcina. 95 



an abandoned mill-race. This, if the want of colour were 

 not accidental, would appear to be a Schizomycete. 



CRYPTOCOCCUS. 



117. C. xanthogenicus, Freire. 



Resembling a Micrococcus. Said to have been dis- 

 covered in Brazil, in persons suffering from yellow fever. 



Dr. Freire, having cultivated this in gelatine for six 

 generations, says that, when introduced into the body by 

 " vaccination," it produced a mild type of yellow fever ; he 

 had previously observed that rabbits and guinea-pigs, so 

 inoculated, were proof against the fatal type of the disease. 



Micrococcus sp. W. Archer describes {Quart. /our. 

 Micr. Set., xiv., 1874, p. 321) a "black" Micrococcus, really 

 blue-black, consisting of cells rounder than in M. prodigiosus, 

 arranged iii twos or fours, the latter in a square, not in a 

 straight line. 



SARCINA. 



118. S. solani, Reinke et Berthold ("Die Zersetzung 



der Kartoffel durch Pilze," p. 22, pi. vii. fig. 13). 



Cells small, colourless, round or before division oval; 

 some free, others collected in unilamellar 



colonies of from 4 to 24; 1-3-2 /* in q^ ^^ 



diameter. (Fig. 80.) ^ -^A 



In rotting potatoes. I^tt Bacterium X)^^,^' 



merismopedioides, Zopf, supra, p. 84, with <^&> ^^ 



which this seems to be identical.) o Q 



I have found a very similar Schizomycete in Fig. io.—Sarcina solani. 

 putrefying starch-paste, which differed in scarcely ". s'^e view of two 

 any respect except its much larger size, the ^^t^^ ^<i ^t" thiwr 

 colourless cells being perfectly round and 6-8 ft. 



in diameter. It occurred singly or in pairs or fours, always unilamellar, 

 the tetrads being collected together in families of i6, 24, or more cells. 



