35 



The essential oils to which :illii-i<>ii will now be niiide, were all 

 pre|>;irod by Messrs. J. IJossisto ami \V . Johnson, at the sugges- 

 tion of Baron Von 3Iuellor, who alsoliirnished the material from 

 which tlu'y were pr^spared. 



I. — ESSKNTIAL Oir.S FIJOM ('KUTAIX Sl'KCIKS OF TIIK GkMS 



M KI.ALKl (A. 



These oils in coniiuon with those of Kuealyptine origin, are all 

 possessed of niedieiiial }.roperli.'s. Tt is more than probable that 

 they will all be found to act as diffusible stimulants, unti-spas- 

 inodics, and sudorities. greatly resenibliui: the oil of cajup^ of 

 commerce (obtained IVoni Melaleuca leucadcndron) to which 

 they are so closely related ))ot inicallv. 



With re-ard to the yield of these plants: it will bo observed 

 that they far exceed in jtroduetiveness yi. leucadcndron, and the 

 ditfercnce would l)e yet more strikinu' could the leaves be operated 

 iin alone: owiiiii- to the minuteness of the same however, it is 

 necessary to introduce the smaller branches with them into the 

 still, so that the leaves do not constitute more than a fourth of 

 the wtMiiht of the material employed. 



In illuminating' power they comoire most favorablv with the 

 best American kerosene, in most cases exeelliuu- it. They are 

 good solvents for resins, especially the oil of M. cricifolia which 

 is not inferior in this respect to those of Kucalyptitu' origin : this 

 oil ourbt perhaps to be regarded as the most important of this 

 (livi>ion inasmuch as the species yieldiuLi' it, exists in much 

 ureater ju'ofu^ion and covers lai-gcr tracts oi' country than all the 

 others taken toi'ether. 





Mihilcitra /iii(iri/h/i\t. Smith — oiu^ of the Tea-trees, occurs in 

 3<] ist (ripps Ijinl, New South Wales and Qutsensland. 



Yield: 100 lbs. {'vcAi branchlets and leaves, gave 2S fluid 

 ■ounces. The 'iil is a light straw-colored mobile fluid : odor 

 resembling that ot cijuput, but less ai'onia tic and pungent : taste 

 singularly agree:ible. strongly sugLi'cstive of ImuIi mace and nut- 

 meg, followed by the usuid mint-like after taste, common in a 

 greater or less degree to the myrtaceous oils. Specific gravitv 

 O.0il3: boiling point PAS^ the mercury ceasing to riso at 3G9 : 

 relative iilamin:iting power 0.082, kerosene - 1.0(10. 



