156 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: 



5. GAS PRODUCTION IN SUGAR MEDIA: 



. dextrose (1) Shake culture: 



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



rate of development: 24 hours per cent.. 48 hours per cent. 



72 hours per cent., hours per cent. 



reaction in open arm 



gas formula, H: CO2-. : : 



?>. lactose c. saccharose 



6. 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) : . , 



