366 Veterinary Medicine. 



membrane. Alum 4 grs. and boric acid 3 grains, in water i oz. 

 make a good'combination. As the mucosa becomes accustomed 

 to one agent, we ma}^ change for another. Thus in addition to 

 the above, silver nitrate (2 : 100), and lead acetate (2 : 100) are 

 often useful as alternates. In obstinate cases red or yellowish 

 oxide of mercury in vaselin (5 : 100). may be applied inside the 

 lids and on their margins. 



Counter-irritation is often desirable, in the horse a blister of 

 cantharides or mercury biniodide to cover a spot as large as a 

 silver dollar above the anterior end of the maxillary spine 

 (zygomatic), or a stout silk thread as a seton inserted in the same 

 place. In the dog the blister may be applied on the temporal 

 region. 



Cupping or leeching beneath the e3'e, or phlebotom}' from the 

 angular vein of the eye may prove useful. Great care should be 

 taken to prevent further injur}- bj^ rubbing. 



PURUIvENT CONJUNCTIVITIS. BLENNORRHCeA. 



More purulent and more infective through dust, tongues, rubbing posts, 

 kennels, swill ; a class due to different microbes. Prevalence in dogs, 

 swine, horses, sheep, goats, cats. Symptoms : acute conjunctivitis with 

 excess of pus, follicular swelling and enlarged lymph bodies in cul de sac. 

 Diagnosis. Treatment : Astringent and antiseptic lotions, injected often : 

 silver nitrate: pyoktannin. 



The forms of conjunctivitis in which there is an abundant pro- 

 duction of pus are usually relatively more inoculable and there- 

 fore more liable to pass from animal to animal in a casual manner. 

 Infection takes place through the dried up discharges floating as 

 dust, but more directly by means of the tongue when the animals 

 lick each other, and through posts against wdiich they rub the 

 head. Animals smeMing or licking the infected genital organs 

 and then the eyes of their fellows may conve}' it readily. Dogs 

 occupying the same kennel successively, contract the disease 

 (Guilmot). Swine feeding from the same trough and plunging 

 the face into swill up to the eyes are especially subject to infec- 

 tion. In speaking of such infections one must be understood to 

 refer to a group and not to one specific disease, as that will vary 



