!54 DISEASES OF THE DOMESTIC ANIMALS 



Laryngitis). — Affects chiefly cattle; less often horses and cats; 

 occasionally other animals. Probably due to a mixed infection of 

 cocci. Sometimes it is enzootic. May be secondary to similar af- 

 fection of pharynx or trachea and bronchii, or complication of in- 

 fectious diseases. Not due to germ of true diphtheria of man, or 

 communicable to or from him. 



Symptoms. — Fever, chills and, in twenty-four to forty-eight 

 hours, attacks of noisy, whistling, difficult breathing and suffocation, 

 with cough. Larynx very sensitive to pressure. Conjunctivitis and 

 nasal catarrh occur. If death does not ensue membranous deposits 

 are expelled from the larynx during cough, after a few days. 



Treatment. — Bleeding may be done or tartar emetic given 

 (3ii-iii) in severe cases and in strong animals. Inhalations of 

 lime water are useful. Hot poultices, constantly changed, or sina- 

 pisms, should be applied to the throat. Potassium iodide (H., 3i t. 

 i. d.), is said to be of benefit. Laxatives and a soft and nutritious 

 diet of mashes, green food and milk are desirable. Tracheotomy 

 done early is imperative in cases with threatened suffocation. In 

 dogs and cats, emesis, with dram doses of syrup of ipecac, should 

 be secured. 



Leukemia — Pseudo Leukemia — Lympho-Sarcoma — Hodgkin's 

 Disease. 



Leukemia is a disease in which there is great increase in the 

 leukocytes, the proportion of white corpuscles to red being from 

 1-50 or even 1-10, instead of the normal relation of 1 white to 

 350 red corpuscles. The disease is comparatively rare, but has been 

 seen in horses, cattle, dogs, cats and swine. It is generally fatal, 

 although it may continue for months or years. There are two 

 forms — the spleno-medullary, in which there is hyperplasia of the 

 spleen and red bone marrow ; and the lymphatic, in which the lymph 

 nodes are enlarged generally, or in certain regions. 



Symptoms. — The symptoms resemble those of pernicious 



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