NASAL GLEET. 15 



In nasal gleet the turbinated bones often become affected, 

 and present a sarcomatous condition. 



Causes. — Xasal gleet frequently exists as a sequel to a 

 neglected case of simple catarrh ; is also due, in some cases, 

 to long-continued exposure and neglect, the animal receiving 

 an insufficient supply of nutritive food ; a common practice 



among farmers being to allow an animal to run out all 

 winter with very little, or perhaps no shelter, and no food, 

 except that afforded by the straw-stack. Injury to the 

 bones also is a cause of nasal gleet. It is not at all neces- 

 sary that the bones should be fractured to produce nasal 

 gleet; the animal may receive a blow, in consequence of 

 which a small bloodvessel may be ruptured ; a clot forms, 

 acts as a foreign body, sets up an irritation which gradually 

 spreads in all directions, until a well-marked case of nasal 

 gleet is the result. The disease also exists in some cases 

 as a symptom of carious teeth, wherein the caries has 

 extended to and involved the osseous structures. Inspis- 

 sated or dried pus, however small in quantity, by acting as an 

 irritant foreign body, is also an occasional cause of nasal gleet. 

 Symptoms. — All chronic nasal discharges should be re- 

 garded with suspicion, and should be given a careful 

 examination to ascertain their nature, as most serious results 

 would be likely to follow a mistaken diagnosis wherein a 

 case of glanders was pronounced to be a case of nasal gleet. 

 A good knowledge of anatomy is of the utmost importance 

 in making the differential diagnosis. The nasal discharge 

 is at first white, before long becoming yellow, and adheres 

 rather tenaciously around the nostrils, but generally is not 

 so viscid as the discharge of glanders. The Schneiderian 

 membrane is reddened at first, but soon takes on a livid 

 hue, and may present an abraded surface, but no ulceration. 

 In some cases the submaxillary glands are found to be 

 slightly enlarged. Percussion over the region of the sinuses 



