DISEASES OF THE RESPIRATOKT ORGANS. 55 



Powdered cantharideSc gr. vi. 



Powdered gentian 3 ij. 



To be made into a ball with linseed meal, 



may be similarly given. Improvement in the general health is the great 

 object in the treatment. Nasal gleet, like all chronic diseases, is very 

 difficult to cure; but nature, when fairly assisted, often enables the part 

 to throw off the morbid action. 



If, however, there is reason to believe that the discharge proceeds 

 only from the lining membrane of the nostrils and that the sinuses are 

 not affected, cold water may be thrown up the nostrils twice a day by means 

 of a large syringe or, what is much better, Key's tube (Fig. 63). The larger 



Fig. 62. 

 Key's tube for nasal injection. 



tube should be about fifteen inches long, and one and a half inches in 

 diameter, expanding, as shown, at the top. The short arm is about five 

 inches in length and the aperture nearly an inch in diameter; on the 

 short arm a closely fitting leather ring is slipped, four inches in diameter. 

 This ring serves as a base to support wet tow or cotton wrapped around 

 the arm which enters the nostril, and when that is compressed serves to 

 close it completely, so that the fluid poured into the larger arm cannot 

 escape, but rises until it passes over the septum and flows from the oppo- 



