158 IMPORTANT VARIETIES OF FISSION-FUNGI. 



what elevated, moist, of consistency of butter ; sulphur- 

 to chrome-yellow (3, iii). 



Agar Streak. — Similar ; water of condensation clear ; 

 whitish-yellow jDrecipitate (3, ii). 



Bouillon Culture. — Clear ; abundant sediment. 



Milk. — Coagulated after forty-eight hours. 



Potato Culture. — Wavy surface growth, often much 

 elevated, shining, especially in old cultures having larger 

 or smaller elevations ; in ycumg cultures with a moist lus- 

 ter, later dull, sulphur-, chrome- and more rarely grayish- 

 yellow, limited to the line of inoculation, only extending 

 a little more widely after a long time (3, ix). 



Chemical Activities. — In peptone-bouillon there is 

 formed some H2S and a trace of indol. The yellow pig- 

 ment is a lipochrome. In grape-sugar bouillon some acid 

 is formed. 



Distribution. — Very common variety in the surround- 

 ings of men, especially in the air. In Wurzburg every 

 plate from air contained it. 



Remarks. — 



The numerous forms isolated by Dr. Stubenrath which belong here, 

 we group under the followiug varieties : 



(a) Typica (Lehmann and Stubenrath). The colony on gelatin 

 may be recognized upon the plate by a marked cleaving of the border, 

 and even with progressing liquefaction of the gelatin the round form 

 is not essentially changed. 



(/3) Compacta (Lehmann and Stubenrath) . The colonies on the 

 gelatin plate are very luxuriant, roundish, and so compact that a bor- 

 der-zone can not be distinctly seen. As this form also causes almost 

 no liquefaction of gelatin, the colonies lie upon the plate as a tough 

 film in the scarcely depressed gelatin. 



{-) ) Diffluens (Lehmann and Stubenrath). This form shows upon 

 all nutrient media a very marked tendency to spread out. Upon gel- 

 atin plates, which are liquefied quite rapidly, the colony spreads as a 

 very much fissured, readily disintegrating mass. 



Sarcina equi (Stubenrath). 



In all respects similar to the Sare. lutea, but is differentiated: 



1. By medium-sized granules, not coarse granules, in the gelatin 

 plate. 



2. Less perfectly formed bales of packets. 



3. More grayish-3'ellow color on all nutrient media; little lique- 

 faction. 



Found repeatedly by Dr. Stubenrath in the urine of various horses 



