646 VETERINARY MATERIA MEDICA. 



Mr. Blaine had given it for years, without experiencing 

 any ill eftect, but often the best, from its use. It is true, 

 it can never gain a character as a certain aperient ; it is, 

 on the contrary, an uncertain one, unless joined with a 

 watery tincture of aloes, or with neutral salts, when the 

 mixture seldom fails, if mashes have been in use : alone, 

 it must be owned, it is not always certain as a purgative, 

 but in quantities that produce much irritation. It is 

 most safe when guarded by Chloroform. 



Oil of Olives. — The best olive oil may be substituted 

 for castor oil, when the latter cannot be obtained. It is 

 the principal medium in the composition of liniments, 

 and enters into many ointments. 



Oil of Linseed. — It is a pretty certain laxative, and is 

 more to be depended on than olive oil ; and in many in- 

 stances more than castor oil. 



Oil of Palm. — This has the consistence of lard ; with 

 the addition of a fragrant smell. As it does not become 

 rancid, it is greatly to be preferred : it must also be less 

 noxious to the stomach of the horse than the animal oils. 

 It is the produce of the kernels of the fruit of the Cocos 

 Butyracea, or Mackaw tree, or Brazilian palm. 



The essential or volatile oils are, — 



Oil of Amber. — An antispasmodic not much in use. 

 It is said to have a pecuhar property of hastening the 

 action of aloes. 



Oil of Anise Seeds. — This is an excellent warm aro- 

 matic, and may very properly be added to cordial balls. 



0*7 of Caraways may be used in the same way, and 

 considered in a similar point of view. 



Oil of Jumper. — This is often added to diuretic balls, 

 to increase their effect : it acts, however, principally, as 

 a warm aromatic. It is now mingled with mange appli- 

 cations. 



Oil of Tar is a cheap penetrating distillation from tar. 

 It may be employed in mixture with whale oil, as a 

 suppling matter for the hoofs. 



Oil of Turpentine. — See Turpentine. 



Oil of Origanum. — This warm penetrating oil was 

 formerly much used as an external stimulant; but it 



