264 SEAT AND NATURE OF GLANDERS. 



therefore not connected with this disease. So far as my observa- 

 tion has gone, no such glandular swelling happens in common 

 inflammation." 



" In chronic glanders, then, the general health, appetite, spirits, 

 &c. remain unimpaired. There is simply a discharge from one 

 nostril, unaccompanied by fetor, with a circumscribed immoveable 

 tumour under the jaw on the same side. In some cases, however, 

 the flux comes from both nostrils : here, commonly, both sets of 

 glands are tumefied, the nature of which swellings will serve to 

 direct the diagnosis; in addition to which, most probably, the 

 animal's health continues good, and the discharge is not offensive. 

 But, if cough be present with such a discharge, the submaxillar v 

 tumefaction uniformly diffused between the sides of the jaw, and 

 there are feverish symptoms and evident impairment of the general 

 health, the lungs are probably in this case the seat of disease. 

 Still, in order that we may be certain about the existence of chronic 

 glanders, we have no occasion to implicitly rely even upon these 

 signs, for we may at once decide the point by the test of practical 

 investigation. We have only to perforate (with a spill-gimlet) 

 the frontal sinuses, and inject some clean tepid water into them : 

 should the sinuses be healthy interiorly, the fluid will run from the 

 nose either limpid as it was thrown in, or merely be tinged with 

 blood ; whereas, in a case of disease there, the water will carry 

 down with it the matter lodged in the cavities. It is not uncommon, 

 in chronic glanders, to observe a horse discharging profusely for 

 several days, and then suddenly to cease running altogether. This 

 arises either from inspissation of the matter collected, or from the 

 effusion of adhesive matter within the sinus, which settles at the 

 bottom of the cavity, and plugs up the aperture b}^ which it com- 

 municates with the chamber of the nose. During the interval of 

 suspension no sign of disease remains but the submaxillary tume- 

 faction; there is no discharge, and consequently there can be no 

 source of contagion ; but, the collection of matter continually aug- 

 menting, at length the plug is forced out, and the flux returns Avith 

 more virulence than ever. In Srnithfield, it used to be a common 

 cheat to sell a horse having this disease for a sound one ; the trick 



