650 VETERINARY MATERIA MEDICA. 



corn. If in the latter, and the matters given are very- 

 dry and hght, the corn should be first sprinkled with 

 water, to prevent the powder being blown away by the 

 breath of the horse or the snorting of the animal. But 

 whenever a horse is delicate in his stomach, and refuses 

 his food on this account, the attempt to give them thus 

 should not be persisted in. 



Purges. — See Cathartics. 



Quassia, a useful bitter in doses of six to ten drachms. 



QuiNA, often called quinine, is a disulphate of quina ; and, 

 as far as our own experience goes, is a very valuable 

 brute as well as human tonic in doses of from one drachm 

 to two drachms, and is more particularly so if conjoined 

 with camphor. We need not say that its costliness pre- 

 vents its use save in particular cases. 



Raking is a method of emptying the bowels by means of 

 the hand. The right-hand arm being stripped and oiled, 

 with the left hand the tail is drawn aside, wdien the right 

 being made as small as possible, should be gently intro- 

 duced up the fundament, and any hardened excrement 

 the hand meets with carefully removed. From this it 

 will be at once evident that back-raking must be useful 

 in a vast variety of cases. It should always be made use 

 of previously to giving a clyster, otherwise the hardened 

 matter may cause the rejection of the fluid. It is also 

 always proper in colic ; and in all cases of costiveness it 

 should never be dispensed with. 



Red Precipitate. — See Mercury. 



Repellents. — Medicines whose action was supposed to 

 consist in driving back humours from one part to 

 another. Modern physiology allows no such power ; 

 and it appears, from the theories now received, that all 

 repellents, as they were termed, act simply by their tonic 

 force. 



Resin, or Rosin, is either yellow or black. The yellow is 

 the one used in veterinary practice ; internally, as a 

 diuretic ; and externally, in charges, plaisters, &c. 



Salts : — 



Common Salt. — This is a useful remedy in veterinary 

 practice ; for when Epsom or Glauber's salt cannot be 

 conveniently got at, this may be substituted as an ape- 



