MATERIA MEDICA AND THERAPEUTICS. 173 



B Cocainas liydrochlor. 



Ac. borici aa Grs. x. 



Aq. dest. § j. 



M. Ft. Sol et Filtra — Sig. A few drops in the eye several times daily. 



For the horse, as a rule not more than two drachms of a 5% 

 solution should be injected subcutaneously, lest restlessness, ex- 

 citement, etc., ensue, which though not necessarily dangerous, may 

 interfere with the operation. 



In using cocaine as a diagnostic agent for lameness, the fact 

 must not be lost sight of, that it is a cerebral stimulant and that 

 if a large quantity is injected, it may cause such a degree of ex- 

 hilaration as to make the patient forget his lameness, thus leading 

 the operator to believe that the improvement is due to anaesthesia 

 below the point of injection, when in reality the apparent re- 

 mission from lameness is of Psychic origin 



It is best not to inject more than 10 or 15 minims on each 

 side of the leg in order to eliminate possible cerebral excitement 

 in susceptible animals. 



(Note. — Cocaine solutions cannot be boiled for the purpose 

 of sterilizing, as the process decomposes the drug. Sterilized 

 water should be used for making solutions, which always should 

 be freshly made. One to two grains of salicylic acid, or 10 grs. 

 of boric acid to the ounce will retard decomposition for about 

 30 days.) 



The oleate of mercury and oleate of cocaine (not official, 10 

 per cent strength) is useful for splint lameness, etc. Cocaine in 

 salves is useful in painful eye disease, especially with citrine oint- 

 ment, (3 to 6 grs. to the 1 dr.), diluted with lanoline. The fluid 

 extract of coca is useful as a stimulant and restorative in collapse, 

 sun-stroke, etc. A 5 or 6 per cent solution of cocaine injected at 

 the point of neurectomy is an aid to the diagnosis of foot lame- 

 ness. A 10 per cent solution will quickly dilate a rigid Os Uteri. 



EUCAIN^ HYDROCHLORAS— EUCAINB 

 HYDROCHLORATB. 



A synthetic product which has, in general, the same action 

 as cocaine. 



Properties. — This occurs in the form of a white neutral, 

 crystalline powder, soluble in 10 parts of cold water; solutions 



