Marks , employed for classifying the Schizomycetes, 1 39 
B. The colonies are yellow. 
(a) The colonies form raised drops. 
Staphylococcus cereus flavus. 
Sarcina lutea , &c. 
(/ 3 ) The colonies form flat deposit-like masses. 
Micrococcus versicolor. 
C. The colonies are red. 
Micrococcus cinnabareus. 
M. roseus , &c. 
D. The colonies are black. 
Black ‘ torula ’ (not a Schizomycete). 
II. The gelatine is liquefied. 
A. The colonies are white. 
Staphylococcus pyogenes albus. 
Micrococcus ureae liquefaciens. 
Sarcina alba , &c. 
B. The colonies are yellow. 
(a) The liquefaction proceeds slowly and imperfectly. 
Micrococcus flavus desidens , &c. 
(| 8 ) The gelatine becomes completely fluid. 
(i) Colonies confined to the centre of the liquefying 
area. 
Staphylococcus pyogenes aureus . 
(ii) Colonies both in centre and at periphery of 
liquefying area. 
Micrococcus radiatus. 
M. flavus liquefaciens , &c. 
III. There is no obvious growth on gelatine at 2 2°C. 
Diplococcus intracellular is, meningitidis. 
Micrococcus pyogenes tenuis , &c. 
2. The organism is a Bacillus. 
I. The nutrient gelatine is not liquefied. 
A. Colonies white, no staining of the gelatine near the 
growth. 
(a) Colonies as minute translucent drops on plates — 
as delicate growths in streak- or puncture-cultures. 
Bacillus cholerae-g allinarum . 
B. septicus agrigenus , &c. 
