1923] 



JENNISON — POTATO BLACKLEG 



37 



TABLE V 



GAS PRODUCTION 



Cult 

 No. 



160.1... 

 170.3... 

 180.2... 

 183.2... 

 187B.1 



191 



194 



195 



196 



197 



198 



201 



Exp. A 



I I 



Dex. 





 

 

 

 

 

 

 

 





 

 





Lac. 





 



+ 

 



+ 

 









 

 



+ 







Sue. 





 

 

 

 

 

 

 

 

 

 

 



Exp. B 



Dex. 





 



+ 

 + 

 + 





Lac. 



Sue 



Exp. C 



+ 

 + 

 



+ 



+ 

 + 



+ 

 + 

 + 

 + 

 + 



+ 

 + 



+ 

 + 

 + 

 + 



+ 

 + 

 + 

 + 

 + 



+ 

 + 

 + 



+ 

 + 



+ 



Dex. 



+ 

 + 

 + 

 + 

 + 



+ 

 + 

 + 

 + 



+ 

 + 



Lac. 





+ 

 + 

 + 

 + 

 + 



Sue 



+ 

 + 

 + 

 + 

 + 



+ 



+ 



+ 



+ 



+ 



+ 



+ 



+ 



+ 



+ 



+ 



+ 



* No data. 



TABLE VI 



DATA ON CARBOHYDRATE REACTIONS 



Investigator 



van Hall . . . 



Appel 



Smith 



Harrison . . . 

 Pethy. & 

 Murphy 



Morse 



Paine 



Shapov. & 

 Edson 



Dextrose 



Lactose 



Saccharose 



Gly. 



:erin 



Gas Acid 



Gas Acid 



Gas 



Acid 



Gas 



Acid 



+ 



+ 







+ 



+ 



+ 







0. 



• 



• 



* 



• 



+ 



* 



* 



* 







+ 



+ 



+ 







+ 



* 



• 







+ 



+ 



+ 







+ 







+ 



+ 



+ 



+ 



+ 



+ 



+ 











+ 



+ 



+ 



+ 



+ 



+ 







+ 



+ 



+ 



+ 



+ 



+ 



+ 



* 



• 



+ 1 



♦ 1 



+ 



+ 



+ 



+ 











Diastatic 



action 







+ 

 + 

 + 







* No data. 



oxygen for metabolic processes from oxygen-containing sub- 

 stances which they can break down. It may be further concluded 

 that the gas production is inhibited by the lack of free 2 . 



In another set of tests (Exp. "B," table v) the same strains 

 were employed as before, being cultivated in plain peptone water 

 to which 1 per cent of the carbohydrate was added. The reac- 

 tion was not adjusted. The Board of Health type of fermen- 

 tation tube was employed, and sterilization was accomplished 

 in the autoclave. After autoclaving, the tubes were set aside 

 for a few days. Just before inoculation, the medium in each was 

 thoroughly mixed by tilting the tube, but no free bubbles of air 



