BABIES. 243 



very difficult to protect dogs from intracranial infection, even after 

 following Pasteur's method. We cannot but admit that there is 

 great value in the observations made by Pasteur; but they still 

 require a great deal of improvement to make them perfect. The 

 method of obtaining the lymph is very primitive, and it has not 

 been accepted by other countries as a method for general adoption. 

 Pasteur's observations have shown the way, and there is no doubt 

 that in the future, with improved appliances and close observation, 

 the disease may be prevented or cured with success, as we know 

 that vaccination of splenic fever and tuberculosis belong to the 

 same class, and they are still very incomplete. 



Pathological Anatomy. The post-mortem results are gen- 

 erally negative and vary in different animals, but, as rule, specific 

 alterations are noticed. These are as follows : 



Great emaciation with very distinct muscular rigidity and a 

 rapid tendency to decay ; collections of mucus upon all the natural 

 orifices; prominence of the cutaneous veins, which are found filled 

 with thick, imperfectly clotted blood; redness and swelling of the 

 mouth and mucous membranes. The throat is covered with a 

 whitish-gray mucous exudation ; intense inflammation of the glands 

 of the pharynx; in some cases slight swelling and hyperemia of 

 the salivary glands. In the cavity of the throat and mouth we find 

 foreign bodies, such as hair, straw, coal, wood, etc. ; they may also 

 be found in the cesophagus, which is frequently very red and cov- 

 ered with clammy, gray mucus. This condition is seen in the 

 stomach which contains little or no food, but, as a rule, numerous 

 indigestible objects of various kinds and sizes — straw, hair, wood, 

 stones, or pieces of leather or rags. The mucous membrane is red- 

 dened and swollen, especially on the surface of its folds, and marked 

 with hemorrhagic erosions. The intestine may be empty, or may 

 contain some of the foreign bodies. The mucous membrane of the 

 pharynx is always very red, swollen, and covered with mucus in its 

 anterior portions. These alterations are also seen in the trachea 

 and the large bronchia. The lungs are, as a rule, filled with blood, 

 but otherwise normal. In rare instances we find circumscribed 

 centres or irritation due to foreign bodie=i being inhaled through 

 the bronchial tubes. The heart and its envelope are generally nor- 

 mal. The inner surface of the pericardium may show hemorrhagic 

 spots. The chambers of the heart, as well as the large bloodvessels. 



