CYSTIC TUMOUES. 427 



fluctuates on pressure. This form of dropsy is common in 

 bitches. The treatment is by tapping (paracentesis), and after- 

 wards injecting the tincture of iodine through the canula. I 

 have repeatedly performed this operation with success. I gene- 

 rally introduce the trocar as near the base of the tumour as 

 possible, and send it upwards obliquely through the skin and 

 subcutaneous tissues. The limits of the tumour in bitches 

 may be very well defined by a careful external manipulation. 



In the cow small ovarian cysts are sometimes a cause of nym- 

 phomania. Their presence can be detected by an examination 

 per rectum, which must be thoroughly emptied, and the hand, 

 being introduced into it, is passed over the uterus until it reaches 

 the ovaries. The diseased ovary is larger than the healthy one, 

 is irregular and lumpy on its surface, and more or less elastic. 

 Moderate compression will cause rupture of the cysts. On the 

 following day there may be increased excitement, with trifling 

 fever; but with quiet and a light diet these soon disappear. 

 Goetz avers that tubercular masses in the ovaries may be dis- 

 pelled in the same manner. — ( Veterinary Journal?) 



Ovarian dropsy has also been seen in the cow and in the 

 mare. 



Cysts in connection with mucous membranes and glands are 

 termed " mucous cysts," and may be witnessed occasionally in 

 the mouths and on the lips, as well as in the vicinity of the 

 eyes, of the lower animals. I have seen that form called ranula, 

 which is a sac containing a glairy fluid, situated under the 

 tongue, on either side of the fra^num. It impedes the move- 

 ments of the tongue, and causes the patient to froth at the 

 mouth. It requires to be removed by a pair of scissors, and the 

 cavity touched with caustic. Pointer and setter dogs are subject 

 to ranula. 



Cysts in the thyroid body constitute bronchocele ; they are 

 said to be caused by the water which the animals drink, and 

 that if the water be changed they will disappear. But I have 

 some doubt as to the truth of the statement that bronchocele 

 is solely caused by the presence of magnesian lime in the water, 

 as I have seen well-marked cases in foals, dogs, and in large 

 flocks of lambs, where this could not possibly be the cause. 

 Doubtless it is found most abundantly on the magnesian lime- 

 stone formations ; but it cannot be denied that low situations. 



