MICROCOCCUS OCHROLEUCUS 261 



mass with the smell of ammonia settling down into the 

 deeper part. If some urine be added to the gelatine a 

 coronet of very fine crystals forms after some days around 

 the white colonies. It also grows excellently upon bouillon 

 and upon urine. 



The Urobacillus Maddoxii renders urine viscid and 

 stringy. Gelatine is not liquefied, bouillon is very quickly 

 rendered turbid, and in this case also crystals form round 

 the cultures in gelatine mixed with urine. 



Micrococcus ochroleucus. — Prove found cocci in normal 

 urine which are possessed of a motility particularly 

 marked when they are united in chains, and Legrain 

 met with them also in the pus of urethritis. Thej' are 

 distinguished by the formation of endogenous spores, which 

 progresses best at 36° C. The gelatine is not liquefied. 

 After even one day colonies with raised edges appear upon 

 the plate, and these later on become yellow and push out 

 processes. In thrust-cultures a sulphur-yellow pigment 

 forms upon the surface, which is soluble in alcohol and is 

 destroyed by acids. A dirty white, creamy layer develops 

 on agar, in which the inoculated streak is prominent as a 

 yellow stripe. On potato there forms a' warty elevation of 

 a yellow colour. All cultures diffuse an intense sulphurous 

 odour. 



Streptococcus giganteus urethrae. — Lustgarten and Manna- 

 berg have discovered in normal urine and in the human 

 urethra large cocci arranged in rows, which form wavy 

 lines and often dense coils. No growth takes place on 

 gelatine, and even on agar it is slow, and best, moreover, 

 at incubation temperature. 



Besides these, the same observers described four varieties 

 of bacilli and seven of cocci as constant inhabitants of the 

 urethra, amongst them the Stapliylococcus pyoijenes aureus 

 and Micrococcus suhfiavus. 



