206 PHYSIOLOGICAL CHARACTERS 



1. RELATION TO TEMPERATURE: 



optimum C. ; limits to C. , 



thermal death-point C.; time of exposure minutes; 



medium in which exposure is made 



2. RELATION TO FREE OXYGEN: 



3. RELATION TO OTHER AGENTS, SUCH AS 



desiccation, light, disinfectants, etc.:. 



4. PIGMENT PRODUCTION: 



6. GAS PRODUCTION IN SUGAR MEDIA: 



a. dextrose (1) Shake culture: 



(2) Fermentation tube, growth in open arm closed arm 



rate of development: 24 hours percent.. 48 hours percent. 



72 hours per cent., hours per cent. 



reaction in open arm 



gas formula, H: CO2: : : 



&. lactose c. saccharose 



S. ACID OR ALKALI PRODUCTION : 



litmus milk. 



7- REDUCTION OF NITRATES: 



to nitrites to ammonia. . , 



8. INDOL PRODUCTION 



48 hours days , 



9. ENZYME PRODUCTION: 



proteolytic 



digestion of gelatin digestion of casein. 



diastatic 



10. CHARACTERISTIC ODOR: 



11. PATHOGENESIS (or other special characters) : 



