BACTERIA FOUND IN THE MOUTH , 205 



1. Abdominal Typhus of the Dog, caused by large numbers of short 

 bacilli generally found singly in the blood and internal organs, bearing 

 a great resemblance to the Bacillus typhi abdominalis of man, especially 

 in the growth on potatoes. 



2. Dog Typhoid, caused by very small thin bacilli occurring in groups, 

 and staining by the Gram method. 



3. Genuine Canine Distemper, caused by small slightly curved bacilli 

 lying in groups, and not staining by the Gram method, growing very 

 sparingly or not at all on the various culture media. 



BACTERIA FOUND IN THE MOUTH. 



1. Leptothrix Buccalis Innominata forms manifold, twisted, and 

 intertwined motionless threads, which are stained yellow with a solution 

 of iodine and iodide of potash. 



2. Bacillus Buccalis Maximus appears in small tufts running 

 parallel, and with the iodine-iodide of potash solution are stained blue- 

 violet (Granulose reaction). 



3. Leptothrix Buccalis Maxima in its form and arrangement 

 presents a great resemblance to the Bacillus buccalis maximus, but is 

 stained yellow with the iodine solution. 



4. lodococcus Vaginatus is found in chains consisting of four to 

 ten cells, which are enclosed in a sheath which is about 0*75 //, thick. 

 The cells are stained a blue-violet with the iodine solution, while the 

 sheaths are stained a pale yellow colour. 



5. Spirillum Sputigenum forms comma-shaped strongly-motile 

 rods, which, when two are arranged together, appear like the letter S. 



6. Spirochaete Dentium (Sp. denticola). This organism, like the 

 other above-mentioned, is found under the edges of the gums. It forms 

 long spirals from 8 to 25 /z long, with sharp-pointed ends, which is also 

 common to the spirillum of relapsing fever, whereby both are distin- 

 guished from other spirilla. 



7. Leptothrix Gigantica. This organism was found in the coating 

 of the teeth of a dog affected with Pyorrhoea alveolaris by Miller, and 

 named gigantica on account of its immense dimensions ; like the other 

 mouth bacteria above mentioned, cultivations on artificial media have 

 not yet been obtained. 



BACTERIA FOUND IN URINE. 



Micrococcus Urese (Leube). Cocci 0-8 to 1-0 /* in diameter, 

 occurring either single, in pairs, tetrads, or in chains. It grows on the 

 surface of gelatine without causing any liquefaction of the medium. 



