236 RELATIONSHIPS OF THE COCCACE^E 



Another interesting Sarcina, possibly related to S. 

 lutea, is the form originally isolated by Goodsir in 1842 

 and named by him S. ventriculi. It was described as a 

 non-liquefying sarcina, isolated from the stomach in cases 

 of hyperacidity of the gastric juice. More recent inves- 

 tigations suggest that there is nothing specific in the rela- 

 tion of this organism to the pathological condition in 

 question (Fliigge, 1896). S. ventriculi was distinguished 

 from the type of S. lutea by the production of an orange, 

 instead of a yellow, pigment. It corresponds, therefore, 

 to the non-liquefying S. aurantiaca. In discussing the 

 latter form we have pointed out that what little is known 

 of orange packet-forming cocci suggests that they are 

 more closely related to Aurococcus than to Sarcina. 

 Whether Goodsir's form was a packet-forming Aurococ- 

 cus or an orange Sarcina can only be decided from a study 

 of similar forms which the future may bring to notice. 



In the fourth type of the genus Micrococcus the pigment 

 production, characteristic of the genus as a whole, was 

 so modified that the growth masses of the organism 

 appeared white. Among the published descriptions of 

 sarcinae a considerable number of species are character- 

 ized in the same manner. S. alba, Zimmermann; S. 

 albida, Gruber; S. alutacea, Gruber; S. Candida, Lindner; 

 S. devorans, Kern; S. incana, Gruber, are white liquefiers: 

 S. lactea, Gruber; S. minuta, De Bary; S. nivea, Henrici; 

 S. pulchra, Henrici; S. pulmonum, Virchow; S. tetragena 

 (Gaffky), Migula; S. variegata, Pansini; S. vermicularis , 



