PATHOGENIC SARCINA.

Loewenberg,¹ in a case of ozena, isolated a pathogenic sarcina. The nasal mucus in this case was composed exclusively of polynuclear leucocytes, and an enormous number of packets of sarcinæ. The cultures gave rise to pure growths of sarcinæ. The treatment instituted led to complete and definite healing at the same time as the organisms disappeared and the fetor faded away. Of the usual solid media the sarcinæ form a shining moist coat, sometimes whitish, at other times slightly yellowish; isolated colonies resemble small drops of rich milk. Gelatin is not liquefied; the older colonies on this medium are rather yellowish. On the ordinary potato media it grows very luxuriously and forms moist white growths. In liquid media it forms an abundant sediment, while the fluid remains clear. In the cover-slip preparations from the nasal mucus of the patient it appeared in the form of characteristic cubical packages, but