14 Prof. W. N. Hartley and A. K. Huntington. 



Nearly the whole of this specimen boiled between 173° and 175° C. 



Photographs were taken after diluting 50, 1,000, 2.000 and 4,000 

 times. The cymene absorptions are seen at 10 T 00 and ^oVo; an( ^ 

 indicate that about -f of the volume of the original liquid consists of 

 this body. (Diagram 12.) 



Diageam 12. 

 Hydrocarbon from oil of lemon. (Dr. Gladstone.) 



The absorption due to cymene is well seen in this specimen. 



Hijdrocarhon from Oil of Nutmeg. — Specimen No. 2. (Dr. Gladstone.) 

 A very considerable quantity distilled at 167°, and as the boiling- 

 point did not rise, a portion of this was taken for examination. 

 Solutions containing T ^ ToVo' Wooj and TWois of tne liquid were 

 examined. It showed the cymene absorption. (Diagram 13.) The 



Diageam 13. 



Nutmeg hydrocarbon. B.P. 167° C. Absorption due to cymene. 



diagrams of course vary a little in appearance according to the 

 number of solutions photographed, and of course in these particular 

 cases by the proportion of cymene present ; hence the diagram repre- 

 senting the absorption in the case of the thyme hydrocarbon gives 

 the best idea of the modification of the terpene spectrum caused by an 

 admixture of cymene by reason of the greater number of photographs 

 employed in depicting it. 



