98 B. BRADLEY. 



arabinose were not affected, and on lactose a trace of acid 

 was produced. The indol reaction (benzaldehyde method) 

 was strongly positive in seven days. 



Case V. (Levinberg). — This organism was recovered from 

 the faeces of a healthy man on the same ship. At two 

 days' incubation it was indistinguishable from a true 

 Gaertner type organism, but by a week on lactose acid 

 was produced, and on saliciu acid and gas. The litmus 

 milk by this time had clotted. The indol reaction (benz- 

 aldehyde method) was strongly positive in seven days. 



Case VI. (McMillan). — This organism was recovered 

 from a healthy man on the same ship. At three days 

 incubation it was only distinguishable from a true Gaertner 

 type organism by the strong acidity on milk. At a week, 

 however, the lactose and cane sugar tubes showed small 

 amounts of acid and gas. The indol reaction (benzaldehyde 

 method) was strongly positive in seven days. 



Case VII. (3202). — In the faeces of a case of intestinal 

 infection firstly diagnosed as typhoid, but subsequently 

 clearly showing itself a quite different condition, was 

 isolated amongst other organisms a gram negative colon- 

 like bacillus. This tested, gave reactions closely akin to 

 b. paratyphosus A. Milk was acidified slightly at first, 

 later becoming strongly acid. At forty-eight hours the 

 only difference from b. paratyphosus A. was that on adonit 

 acid and gas were produced, while sorbit was not affected. 

 Later the lactose tube became acid, and gas was not 

 produced up to twenty-one days. The indol reaction (benz- 

 aldehyde method) was strongly positive in seven days. 



Case VIII. (3511). — From ice cream, an organism agree- 

 ing with the Gaertner type in many particulars. Dulcit 

 and arabinose were not fermented. The organism between 

 the eighteenth and twenty-first day gave slight acid on 

 lactose and cane-sugar. Litmus milk shows cameleonage. 



