202 BACTERIOLOGY 



3. Indol production not stated. 



8. B. brassiccz Lehmann-Conrad. 



B. Milk not coagulated. HOG CHOLERA GROUP. 



1. Indol produced. 



9. B. icterogenes Kruse. 



10. B. Poelsii. 



11. B. columbarum. 



2. No indol produced. 



a. More or less gas produced in lactose bouillon. 



12. B. Breslaviensis Kruse. 



b. No gas in lactose bouillon. 



/ 13. B. Salmoni (Trevisan). 

 14. B. levans Lehmann-Wolffin. 



c. Gas production in lactose bouillon indeterminate. 



15. B. loxiacidq. 



3. Indol production indeterminate. 



1 6. B. morbificans Basenau. 



17. B. Silberschmidii. 



18. B. murium Lbffler. 



II. No gas generated in glucose bouillon. TYPHOID GROUP. 



A. Milk coagulated. 



19. B. intestinalis Dyar-Keith. 



B. Milk not coagulated. 



I. Potato cultures whitish grayish or invisible. 



a. Bacteria from animal habitats, pathogenic; nearly identical in 



cultural characters with B. typhosus. 



* A pyogenic reaction at point of inoculation in guinea pigs. 



20. B. meningitidis Neumann-Schaeffer. 



** No pyogenic reaction by inoculation into experimental animals. 



21. B. typhosus Zopf. 



22. B. ps eudo -typhosus Kruse. 



23. B. Billingsi. 



24. B. paradoxus Kruse. 



25. B. pestis (Lehmann-Neumann). 



b. Soil and water bacteria, not so distinctly connected with B. ty- 



phosus, 



* Rosolic acid solution decolorized. 



26. B. solitarius Ravenel. 



