CONTAGIOUS DISEASES. 



structures, and are free or within the cells of the part. They 

 are slightly motile, straight, or slightly curved, with rounded 

 ends, and sometimes appearing as diplo -bacilli. 





TH 



.^-■^ ' 







1 '' r ^ V > 



:^J^.. -- 



Fig. 7.— Glanders Bacilli. 



They stain readily with aniline dyes, but do not retain 

 their colour with Gram's method. The best stain is that of 

 Schlitz : potash solution, 1 in 10,000, and concentrated alcoholic 

 methylene blue, equal parts. Wash the section in a watch- 

 glass full of water, containing four drops acetic acid. Transfer 

 for five minutes to 50 per. cent, solution of alchohol, fifteen 

 minutes to absolute alcohol, clarify in clove oil, and mount in 

 Canada balsam. 



The specific poison can be introduced into the system either 

 by the skin or mucous membranes. By inserting the virus 

 under the skin with the point of a lancet, by rubbing the 

 greasy heal of a horse, and by inoculating the mucous mem- 

 brane of the nose, the disease has been produced. 



With regard to the transmission of the contagium of glanders 

 otherwise than by actual contact, opinion seems to be divided, 

 some writers maintaining (and the experiments brought to bear 

 upon their conclusions are formidable) that it is impossible to com- 



