62 TEE DISEASES OF THE DOG. 



dogs. In this connection Surgeon-Major Fairweather's 

 report on the cat epizootic at Delhi is worthy of notice. 

 The disease occurred during the prevalence of cholera, and 

 cats were dying by scores, sometimes after a few hours' 

 sickness with vomiting and profuse purging. The post- 

 mortem appearances were like those of cholera. All the 

 cats had a pinched appearance, eyes sunken in their sockets, 

 and the viscera seemed to occupy less space than usual. 

 The intestines generally contained nothing but thin fluid like 

 rice water, in one or two instances slightly tinged pink, 

 always completely free from bile. Congestion of the tube 

 in one or two cases but no ulceration. Liver generally 

 flabby, gall-bladder full. Kidneys much congested, lungs 

 shrunken ; heart, a loose black clot on the right side. An 

 attempt to convey disease by cohabitation with a diseased 

 animal failed, as also did ingestion of the intestinal con- 

 tents. Human choleraic evacuations given to cats caused 

 vomition and purging, and in some cases death, with the 

 ordinary appearances of the cat disease. Subsequent 

 experiments did not confirm this result (' Veterinary Jour- 

 nal,' iii, p. 209). 



Tobeeculosis. — There certainly occur in the dog some 

 disorders of the lungs, mesenteric glands, and other parts 

 of the body which have all the appearance of tuberculosis, 

 and yet we are not aware of any distinct evidence having 

 been brought forward that true " consumption," due to the 

 tubercular bacillus, is ever found in the dog. Observations 

 made by MM. Colin and Laulanie tend to prove the occur- 

 rence in the dog of certain false tuberculoses in the lungs 

 due to the filaria or strongyles in the lungs (Colin) or the 

 arrested ova of Strongylus vasorum (Laulanie). The 

 latter observer shows that the adult strongyles live in the 

 right ventricle and the larger divisions of the pulmonary 

 artery, and from there the fecundated ova pass into the 

 pulmonary arterioles and capillaries, where they are 

 hatched, and the embryos soon migrate into the smallest 

 bronchi, where they are found in great numbers in sections 

 of lung tissue examined under the microscope. The lungs in 

 which these parasites reside are studded with small, grey, 



