Canine pathology. - 
199 * 
The right kidney was enlarged to about twice its normal size, 
and was diseased. A section was sent to Dr. Peabody, the 
eminent pathologist to the New York Hospital, who very kindly 
examined it under the microscope, - and reported as follbws: 
“ There are areas in which the intertubular connective tissue 
itf markedly increased. In these areas there are many tubes that 
are atrophied by pressure in great part, and some traces of pre¬ 
existing tubes that have almost disappeared. In some of these 
places there are many cysts, caused by dilatation of the tubes; 
this dilatation is due to constriction of the tube below it. The 
dilated tubes (forming cysts) are lined by flat epithelium and 
filled by hyaline material; many contain hyaline cysts. In some 
places between the tubes are large collections of young cells, 
which indicate active interstitial inflammation. I should consider 
the case one of chronic diffused nephritis. The lesions at present 
to be seen are only those of chronic interstitial nephritis.” 
A peculiarity of this case is that no symptoms that would 
lead to an idea of the trouble were manifest. 
Tuberculous Nephritis. 
A little Scotch terrier was brought to the hospital clinic one 
morning in great distress. The owner said that the day before 
he had noticed that the dog had made frequent ineffectual 
attempts to micturate. Toward evening he became uneasy, 
would strain violently and utter piercing cries. He became 
worse during the night, and in the morning seemed quite ex. 
hausted. On manipulation, the bladder could be felt distended 
with urine, the penis was inflamed and very tender to pressure, 
there was also slight tenderness over the loins, complete loss of 
appetite, nervous exhaustion, and a slight rise in temperature. 
While at the hospital, the dog micturated several times; only a 
few drops, however, came away; this was attended with violent 
straining and much pain. 
A calculus, or an enlarged prostrate gland was thought to be 
the cause of the difficulty, and a grave prognosis was given. 
A soothing injection was thrown into the urethra by a hypo¬ 
dermic syringe, and belladonna given internally. The animal 
