58 
LOUIS r. COOK. 
when certain laryngeal muscles are paralyzed. Now to effect a 
cure for this condition it is only necessary to obliterate the ven¬ 
tricle of the affected side, and to do this we have only to remove 
the thin mucous lining. When this is done the denuded walls of 
the ventricle soon grow together. The remedy for this common 
disease of the horse is, therefore, simple, and its application is 
also simple. The removal of the mucous lining can be done 
easily, as follows: 
Inject a dram or so of an aqueous solution containing about 
i in 4,000 of adrenalin and 4 per cent, cocaine under the skin di¬ 
rectly over the triangular space between the cricoid and thyroid 
cartilages. The cartilaginous borders of this space can be dis¬ 
tinctly felt through the skin and thin muscular tissue. When 
local anesthesia is obtained make a longitudinal incision about 2- 
inches long in the median line through the skin. Then cut 
through the crico-thyroid membrane from the body of the thyroid 
cartilage anteriorly to the cricoid cartilage posteriorly. This will 
permit the index finger to be passed into the larynx and into the 
ventricle of the affected left side. With the finger-of one hand in 
the ventricle, pass a long and slightly curved nozzle of a small 
syringe along the finger in the ventricle, which will guide it, and 
inject about a dram of the same cocaine-adrenalin solution into 
