132 THE CANADIAN HOESE 



it ; the tumour seldom causes pain, and the animal appears 

 not inconvenienced by it, although very large. The tumour 

 varies in size, from as small as a pigeon's egg to as large as 

 a man's hand.v It is sometimes supposed to be a cause of 

 roaring, but we must confess we have never met with a 

 case of roariQg that could be clearly attributed to that cause. 

 Treatment. — Of all the medicines in veterinary practice, 

 iodine and its compounds appear to be the most efficacious 

 in reducing these enlargements, as well as in other glan- 

 dular swellings. Iodine ointment should be applied ex- 

 ternally, in proportion of one part of iodine to seven of 

 lard (see Ointments, page 216), to be applied daily, and at the 

 same time administer twice a day one drachm of the iodide 

 of potassium given in solution. 



NASAL GLEET 



is the name applied to a chronic glairy discharge from one 

 or both nostrUs, and is the result of a subacute inflammation 

 or other diseased conditioil of the lining membrane of the 

 sinuses of the head, and these sinuses more especially in- 

 volved are the frontal and maxillary. Nasal gleet is not an 

 uncommon disease in Canada, and many horses have been 

 destroyed, supposed to be affected with that most loathsome 

 disease glanders, when in reality they were only suffering 

 from nasal gleet. 



Causes. — It is very often the result of catarrh in a chronic 

 form, induced by further exposure to cold, and want of a 

 proper supply of nutritive food. We' have also met with 

 cases where it could not be traced to a catarrhal attack of 

 the air passages ; and it occurs oftener in aged than in 

 young animals. 



■ Symptoms. — The first noticeable symptom is a yellowish • 

 discharge from one or both nostrils. The lining membrane 



