566 



in any quantity, and a similar oil produced, by distillation, from 

 the ilucalyptus piperita, a powerful solvent of caoutchouc, eri- 

 dently very similar, if not altogether identical, with the oil of 

 cajeput. The characters of these two oils are much alike and 

 "without some care it is difficult to distinguish them from oue 

 another by the odor : the liptospermum oil has a slight tinge of 

 yellow, its specific gravity is 0'9035 ; the eucalyptus oil is colorless, 

 and has a density of 0'9ii5. It is probable that these oils might 

 be used with great advantage in the manufacture of vai'nish, they 

 readily dissolve copal, and when its solution is spread over any 

 surface the oil soon evaporates, and leaves a hard, brilliaut and 

 uniform coating of the resin. These oils, according to Prof Solly, 

 are specially worthy of atrention. 



Dr. Bennett, in his " Wanderings in Xew South Wales," states 

 that a large quantity of camphorated oil, which closely resembles 

 the cajeputi, is produced from the foliage of several species of 

 I^wcalyptus. Some of the leaves, which are of a bluish green, con- 

 tain it in such abundance as to cover the hand with oil when one 

 of the leaves is gently rubbed against it. 



From the odorous leaves of the Arhor alha is extracted a por- 

 tion of the aromatic cajeput oil. This celebrated medicinal oil is 

 principally made in the island of Borneo, one of the ^Moluccas. 



The leaf of the MeJaJeuca minor yields, by distillation, the vola- 

 tile oil of cajeputi, well known as a powerful sudorific, and a useful 

 external application in chronic rheumatism. It is an evergreen 

 shrub, with white flowers like a myrtle, native of the East Indies, 

 principally flourishing on the sea coasts of the Moluccas and other 

 Indian islands. Two sacks full of the leaves yield scarcely three 

 drachms of the oil, which is limpid, pellucid, and of a green color. 



Oil of cinnamon and oil of cassia, according to Mulder, have 

 the same composition, T\Tien fresh they are pale yellow, but 

 become brown on exposure to the air. On exposure they rapidly 

 absorb cinnamic acid, two resins and water. 



More than 22,000 lbs, of essence of bergamot was imported in 

 1S18. It is obtained by distillation or pressure from the rind of 

 the fragrant citron. 



Andropogon calamus aromaticv.s. of Eoyle, A. nardoides, of Xees 

 T, Esenb., according to some yields the grass oil of ]S"amur. 



The fruits of Carum carui, a hardy biennial British plant, 

 popularly kno^^^l as caraway seeds, supply a volatile oil, which is 

 carminitive and aromatic. Oils of a similar kind are obtained from 

 Coriandriun sativum, from anise {Pimpinella A?iisum\ and cumin 

 {Caminum Cgminum'), a native of Egypt, 



The production of cinnamon, clove, and cassia oils, have abeady 

 been noticed in speaking of those spices. 



In Malabar, a greenish sweet- smelling oil is obtained, by dis- 

 tillation, from the roots of JJiiona JS^arum, an evergreen climber, 

 which is used medicinally as a sttmulaiit. 



Oil or Peppermint. — Mr. De Witt C. Van Slyck, of AUoway, 

 Wayne county, Sew York, fui'cished me \\dth the following par- 



