UMBILICAL PHLEBITIS OR OMPHALO-PHLEBITIS. 405 



fill the bladder and distend the urachus. The treatment necessary in 

 this case is similar to that of persistence of the urachus. 



It is well in all cases to be guided by the following principle : 

 never to resort to treatment unless suppuration has occurred and the 

 sinus is blind. To check suppuration a blister may be applied around 

 the umbilical region while means are taken to prevent the animal 

 licking the parts. 



Chassaing in 1886 suggested a rather original method of operation 

 which deserves description. It is founded on the permanent treatment 

 of sinuses, and consists in introducing a flexible osier stick, a kind of 

 bougie, enveloped in tow and moistened with the following mixture : 



Collodion . . . . . . . . . . . . . . 3 parts. 



Sublimate . . . . . . . . . . . . 1 part. 



This is introduced for a distance of 3 to 4 inches into the fistula, and 

 is fixed to the skin with gutta-percha or pitch. The dressing is renewed 

 every five or six days, and healing takes place, it is said, in one, two, 

 or at most three weeks. 



It is very likely that if the sinuses were previously cleared and 

 simply plugged with antiseptics or treated by introducing pencils of 

 salol, nitrate of silver, sulphate of copper, iodoform, etc., at least as 

 good results might be obtained. 



