252 DISEASES OF TRUE INFECTION. 



spread is then discolorized in any of the inorganic acids in weak 

 solution, preferably nitric acid, 10 per cent, in 95 per cent, alcohol. 

 Decolorize until a faint tinge of pink remains. After washing in 

 distilled water, counterstain with Loffler's alkaline methyline blue 

 for ten or fifteen minutes and wash in distilled water, dry, and 

 mount in canada balsam. The tubercle baccilli will stain a deep 

 red in contrast to the blue stain of the cellular material and delcis. 



If an animal is suspected of being affected with tuberculosis, the 

 tuberculin test should be tried and administered as follows: the 

 temperature must be taken for several days to see that no fever is 

 present. One milligram of tuberculin is injected subcutaneously ; 

 the best location being inside the thigh or along the sternum ; and 

 the temperature taken at intervals during the next twenty-four 

 hours ; if after that period no rise of temperature is noted, in three 

 or four days, the injection of three to five milligrams of tuberculin 

 may be again repeated, and the temperature taken as before. If 

 there is a reaction amounting to one or two degrees C. after both 

 injections, one can be reasonably sure of the presence of the disease. 



Tuberculosis of abdominal organs is difficult to recognize. By 

 pressure, or manipulation, of the abdominal cavity, we may recog- 

 nize swollen lymphatic glands. We find, however, great emaciation 

 and symptoms of chronic catarrh of the intestinal tract. These 

 last two symptoms would be sufRcient to make us suspect intestinal 

 tuberculosis. In one case of tubercular ulceration of the intestines 

 observed by the author, the dog was very thin and symptoms of 

 catarrh of the lungs were present, and a deep abscess and masses 

 of thin pus found on neck; near the abscess a granular mass, the 

 size of a chestnut, which could be pushed under the cutaneous mem- 

 brane and moved about freely; enlarged lymphatic glands existed 

 in the upper portion of the neck. 



Theeapeutic Treatment. It is the duty of the veterinarian 

 to warn the owner of a tubercular or suspected dog of the danger 

 of infection, and advise him to destroy the animal. Koch's lymph 

 or tuberculin has been tried thoroughly, and while it has no appar- 

 ent value in curing the disease, it has fairly established itself as a 

 reliable diagnostic agent. 



Anthrax. 



Anthrax, quite rare in the dog, is generally caused by the animal 

 eating portions of cadavers of affected animals. All forms have 



