THE CLASSIFICATION OF BACTERIA 97 



2. Gelatin liquefied slowly, or imperfectly. 



67. M. luteus Cohn. 



68. M. Urugua. 



B. Gelatin liquefied only on the surface ; shallow, crateriform. 



1 . Colonies with distinct lobular projections from the central body. 



69. M. conglomerates (Bumm) Fliigge. 



70. M. flavus Fliigge. 



2. Colonies not specified as before. 



a. Potato cultures salmon-colored brown ; rough rugose. 



71. M. rugosus. 



b. Potato cultures yellow, not rugose. 



72. M. orbicularis Ravenel. 



73. M. Tommasoli. 



74. M.versatilis Sternberg. 



62. M. epidermis 



Diplococcus fiavus-liquefaciens Unna: Tommasoli, Monatshefte f. prakt. Dermatol., 



IX, 56. 



Morphology. Cocci 0.5-0.8 /a, like gonococci. 



Gelatin colonies. Deep: small, round, opaque, olive-brownish yellow. Surface: 



in 8 days, very small, round, glistening, light-grayish yellow ; later, 3 weeks, 



chrome yellow greenish yellow, surrounded by a zone of liquefied gelatin. 

 Gelatin stab. Growth in depth, thin, yellowish ; on surface, thin, yellowish 



white, slimy ; in 3 weeks 3-4 mm. ; later, depressed, due to liquefaction ; 



in 8 weeks one-half of the tube is liquefied. Gelatin yellowish, with a 



yellowish sediment. 

 Agar slant. Growth thick, slimy, yellowish white greenish yellow. 

 Potato. Growth sulphur-yellow. 

 Habitat. From the skin in eczema. 



63. M. albus (Lindner) 



Pediococcus albus Lindner : Die Sarcina Organismen der Gahrungsgewerbe, Berlin, 1888 ; 

 ref. Bot. Centralblatt, 1888, 99. 



Morphology . Cocci solitary, in pairs and tetrads, frequently in pseudo-sarcina. 



Gelatin colonies. Round, becoming liquefied. 



Gelatin stab. In 24 hours, a deep channel of liquefied gelatin, with a whitish 



sediment, becoming pale orange. 

 Agar slant. Growth broad, dry ; old cultures have an orange color. 

 Potato. Growth dirty white. An acid reaction of the medium. 

 Habitat. From water and Weiss beer, causing a slight acidity of the latter. 



H 



