56 VETEKINAKY MEDICINE AND SURGERY. 



site nostril. Nervous horses may have to be blindfolded. Gentle means 

 will usually enable the operator to use this tube without difficulty. A 

 solution of 



Sulphate of zinc 3 i. 



Water 1 pint 



or, 



Carbolic acid 3 ij. 



Water 1 pint 



may be injected with this tube twice a day into the sinus affected and re- 

 lease the collected matter. After the matter has been released, the sinus 

 will require to be washed out with tepid water by means of a syringe; and 

 perhaps the membrane may require further treatment, as described in 

 the next paragraph. 



If the cause lie in the disease of a tooth, it may be possible to remove 

 it; but generally this is not practicable, and we can hardly hope that any 

 remedial measures will be effectual in arresting the discharge from the 

 irritated membrane; we shall have the satisfaction of knowing, however, 

 that the diseased action is not connected with glanders. 



After a time — it may not be until after a considerable time — when 

 such parts of the tissue as are dis^josed to do so have sloughed away, the 

 discharge may cease; but in other cases the irritated membrane may con- 

 tinue to pour out mucus or pus, and trephining, as a last resort, offers 

 the only hope of a possible cure. 



After being ©pened, the sinus will need to be freely injected for some 

 days Avith warm water in order to clear out the collected matter; after 

 which, in some cases, it may be necessary to inject some mild stimulant, 

 such as 



Sulphate of zinc 3 i. 



Water 1 pint. 



The action of the stimulant will at first excite increased discharge, 

 but it will probably become of a more healthy character. If the discharge 



