Essential Oils. 189 



Chinese vegetable tallow. From tlie seeds of Crotoii 

 sebifenim. 



Bencoolen nut oil. From Croton Moluccanum. 



Guy amadou. From the fruits of the Virola sebifera or 

 Myristica sebifera. The four preceding are all used to make 

 odoriferous candles. 



P.ENOE tallow. From the fruit of Vateria Indica by boiling, 

 white, sometimes yellow, greasy with a waxiness, burns with an 

 agreeable odour. 



Sassafras nut oil, Oleum fabarum pichurim, P. Belg. White, 

 butter-like, smelling like sassafras, becomes yellowish and tallowy 

 by age: lib. yields about one oz. and a half of oil. 



Cocoa nut oil, O. cocois nuciferce. By the press, white, used 

 for lamps, and to make gas for lights ; makes a stinking soap. 



Fine cocoa nut oil. By boiling, used in cookery. 



Cabbage palm oil. From Areca oleracea. 



ESSENTIAL OILS. 



These oils, unless it be otherwise directed, are obtained by 

 distilling the articles with an equal weight of water to prevent 

 them from adhering to the still, and the oil and water acquiring 

 a burnt taste ; some, as those of the peels of fresh fruits, are 

 obtained by rasping them, and pressing the raspings ; a few by 

 distilling the articles with twice their weight of water, adding lib. 

 of salt to each gallon of water, using a quick fire, and when half 

 the water has come over, pouring it back again into the still, and 

 thus cohobating it on the article. When rectified for the purpose 

 of rendering them finer, they are distilled without water in a 

 retort, and one half the oil is drawn over ; that left in the retort 

 is mixed with raw oil intended for sale in that state ; they are all 

 stimulant, in doses of gtt. ij to x upon sugar, but are mostly 

 made into cordial waters, by distilling with spirit of wine, or 

 water. 



Distilled oil of wormwood, Oleum essentiale absinthii. 

 From the herb ; stomachic : 25lb. of green wormwood yielded 

 from six to ten drachms of oil ; 41b. of dry yielded an ounce, and 

 l8lb. only .^jss. 



Oil ol acokus. Oleum acoriy O. calami aromatici. 501b, yielded 

 2 oz., lib. yielded 3ij ; sweet scented. 



Ginger grass oil. From Andropogon nardus, pleasant 

 tasted. 



Oil of amyris protium. Aromatic. 



Essential oil of bitter almonds, O. amijgdalarum ama- 



