I o6 The Managemejtt and Diseases of the Dog. 



CANCEROUS DEPOSIT IN THE LIVER AND- 

 SPLEEN IN THE DOG. 



Veterinarian, Jan., 1870. 



" We are indebted to Messrs. Cowing & Son for the par- 

 ticulars of two remarkable cases of cancer affecting the in- 

 ternal organs of the dog. In each case the animal was aged, 

 and in a hopeless condition when first seen by Messrs Cow- 

 ing, consequently no treatment was attempted. 



" Post-mortem examination was made soon after death,, 

 and the appearances satisfactorily explained the condition 

 of the dogs during life. 



" In the first case, which was examined in the beginning 

 of October, there was a large nodulated tumour, of a pale- 

 greyish-yellow colour at the root of the mesentery. Num- 

 erous deposits of a similar character were found all over' 

 the liver, both covering the surface and extending to the 

 interior of the gland. 



" Under the microscope the deposit was found to consist 

 of cells of various forms, caudate, spindle and fibre-cells,, 

 with many others containing nuclei, and evidently multi- 

 plying by the endogenous process. 



" A considerable quantity of fine fibrous stroma gave to- 

 the deposit a density and hardness characteristic of scir- 

 rhous growths. There was scarcely a trace of the milky^ 

 juice which is an . invariable constituent of encephaloid. 

 tumour. 



" The second animal presented appearances in some re- 

 spects more marked than those which have just been de- 

 scribed. The subject of the disease was a Maltese dog, 

 aged fourteen years, which was seen by Messrs. Cowing 

 only a few hours before its death. 



" On post-mortem examination the liver was found to be 

 covered with yellowish spots, and a tumour of similar char- 

 acter was detected in the spleen. 



" Microscopic examination of the morbid deposit resulted 



