336 SEROUS CYSTS. 



spot, as a result of pressure against the side of the withers, 

 especially on the ofl-side from a side-saddle (p. 101). 



TREATMENT. — The best method of treating this affection is to 

 draw off the serum with an aspirator under antiseptic precautions 

 (p. 70), which is an operation that requires surgical knowledge and 

 skill. If this cannot be done, make an opening through the skin 

 at the lowest point of the tumour with a rowelling scissors (Fig. 

 139), and give exit to the fluid with a probe. Then syringe an 



Fig- 139. — Rowelling scissors. 



antiseptic solution (p. 67) into the cavity, and having again 

 emptied it, repeat the operation. After having withdrawn the 

 syringe, cover over the wound with tannoform or iodoform and 

 antiseptic cotton wool. The syringe and probe, before being used, 

 should be placed for about five minutes in boiling water, and after 

 that in a solution of creolin or carbolic acid (1 to 20 of water), so 

 as to render these instruments free from organisms which might 

 give rise to suppuration. 



