24 THE MANAGEMENT AND DISEASES OF THE DOG. 



exudation ; attempts at inflation of the affected portions witl; 

 air are unsuccessful. Portions excised sink at once when 

 placed in water. In the left lung the apex of the anterioi 

 lobe, the whole of the middle, and the root of one of the pos- 

 terior lobes are in the same condition. The portions of the 

 organs not diseased are of a rosy red externally, and on sec- 

 tion contain much blood and frothy serum. Between the 

 healthy and diseased parts there is a zone of intense hyper- 

 aemia. 



" Trachea. — On slitting up the windpipe the mucous mem- 

 brane is found covered with a dark frothy mucus. The 

 membrane looks pale and natural to within an inch of the 

 bifurcation, but at this point it becomes reddened, and uneven 

 from the projection of irregular little masses of a greyish yellow 

 color, which on close inspection are found to be localized 

 swellings of the membrane, containing small parasitic worms, 

 the white bodies of which can be seen lying upon and par- 

 tially imbeded in these elevations. They are most abundant 

 just at tlje bifurcation, at the lower part of which several 

 have emerged, forming an elevation of three or four lines in 

 height. About the orifices of the second divisions these 

 little masses are also seen, and the whole mucous membrane 

 of this region is deeply congested, and somewhat swollen. 

 Very few of the worms are found lying free on the mucous 

 membrane ; almost all of them are attached to the masses 

 or buried in them. The smaller tubes, especially those lead- 

 ing to the diseased portions of the lungs, are filled with a 

 dirty brown fluid, and on squeezing any portion of the organ 

 quantities of it can be expelled. 



" The bronchical glands are swollen and enlarged. 



" The spleen appears healthy. 



" The left kidney contains a large amount of blood ; other- 

 wise looks natural. Nothing unusual in the right one. 



" The stomach contains a few ounces of dark brown fluid ; 

 mucous membrane is pale. Large veins full. 



"The duodenum contains a bile-stained mucus, and on 



