50 



MICROBIOLOGY 



9. Temperature relations: 



Thermal death-point (10 minutes exposure in nutrient broth 



when this is adapted to growth of organism) C. 



Optimum temperature for growth C. : or best growth at 



15 C, 20 C, 25 C, b(P C, 37 J C, 40 C, 50 C, 60 D C. 



Maximum temperature for growth C. 



Minimum temperature for growth C. 



10. Killed readily by drying; resistant to drying. 



11. Per cent, killed by freezing (salt and crushed ice or liquid air) 



12. Sunlight: Exposure on ice in thinly sown agar plates: one- 



half plate covered (time 15 minutes), sensitive, not sensitive. 

 Per cent, killed 



13. Acids produced 



14. Alkalies produced 



15. Alcohols 



16. Ferments: pepsin, trypsin, diastase, invertase, pectase, cytase, 



tyrosinase, oxidase, peroxidase, lipase, catalase, glucase, gala- 

 tase, lab, etc 



17. Crystals formed : 



18. Effect of germicides: 



Substance 



Method used 



bJD ' 3 cS ^ \ 



II III 



I* 



IV. PATHOGENICITY. 



1. Pathogenic to Animals. 



Insects, crustaceans, fishes, reptiles, birds, mice, rats, guinea 

 pigs, rabbits, dogs, cats, sheep, goats, cattle, horses, monkeys, 

 man 



2. Pathogenic to Plants: 



