Sarcina Aurantiaca. 



OBANGE SABCINE. 



Origin. — From air, also from weiss-beer. 



Form. — Small, spherical cocci, grouped as diplococci 

 or tetrads, and at times in package-shaped masses. The 

 latter are especially constant in hay infusions. 



M OTi LiTY — None. 



Sporulation. — None. 



Anilin dyes. — Stain very easily, and are likely to 

 overstain. 



Growth. — Rather rapid. 



Oelatin plates. — Show round, sharp-edged colonies, which are 

 granular and of an orange-yellow color. These soon liquefy the 

 gelatin. 



Stab cultwre. — The gelatin is liquefied along the entire line of 

 inoculation. Eventually, an orange-colored deposit of bacteria forms 

 on the bottom, and the liquid above becomes clear. 



Streak cultv/re. — On agar, it forms a thick, orange-colored growth. 

 On potato, the pigment is excellently developed, and the growth is 

 thick. 



Oxygen requirements. — It is aerobic. 

 Temperature. — A high temperature is unfavorable. 

 Behavior to gelatin. — ^It liquefies rapidly. 

 Aerogenesis. — Not observed 

 Pathogenesis. — It has no effect on animals. 



A red sarcine has been found in so-called "red milk" 

 — a condition which at times may be due to B. prodigiosus, 

 or to red yeasts. A somewhat similar micrococcus has 

 been found in "red sweat." It is interesting to note that 

 the sarcine commonly found in the lungs is said to form 

 spores. Another red sarcine, isolated from an ascitic fluid, 

 possessed active motion. A motile sarcine with giant- 

 whips has been observed. 



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