THE MALE GENERATIVE ORGANS 269 



the bitch during coition, and the latter because of the 

 difficulty of access for the purpose of complete surgical 

 removal from the dog. 



One can usually surmise with approximate correctness, 

 from an examination of an affected bitch, what has been the 

 situation of the tumour on the penis of the dog from whom 

 she received the infection. 



Symptoms. — Unless the owner of the stud dog is cautious, 

 or has some reason for making an examination, the disease 

 may have existed for some months without his attention 

 being drawn to it. The only suspicious symptoms evinced 

 are that there may be haemorrhage after service, the dog 

 may refuse to act, or (especially if it is close to the urethral 

 orifice) the patient may show pain when urinating. 



Smith and Washbourn thus describe one case in which they were able 

 to watch the progress of the disease on the penis of a dog" from its 

 commencement. 



Within a week of infection the growths appeared as small glistening 

 elevations, about the size of millet-seeds, mostly transparent but some- 

 times blood-stained. They looked like vesicles, but on pricking" them they 

 proved to be solid. One was remo\ ed, and on microscopical examination 

 showed the same structure as the more advanced growths. At the end of 

 two months they were still small, but were more solid in appearance. At 

 the end of six months two of the growths had considerably increased in 

 size, and were about half an inch in diameter, «hile the remainder had 

 disappeared. In a year the growths had further increased in size, and 

 had assumed the usual lobulated appearance. 



Operation. — The patient is secured in the lateral or dorsal 

 position, and the penis exposed and washed with disinfectant. 

 The tumours and surrounding mucous membranes are painted 

 with a 5 per cent, solution of cocaine, and allowed to remain 

 for three or four minutes till anaesthetized. The growth is 

 then picked up with forceps and snipped off with sharp 

 scissors, the operator taking particular care to excise sujficient 

 of the surrounding mucous membrane to clear the edges of the 

 tumour. This precaution is essential, and if it can be done 

 that particular growth will not return. If a portion of it is 



