524 K. T. BAKER AND H, G. SMITH. 



These samples of first hour oil did not readily give definite 

 reactions for the presence of phellandrene, although the 

 laevo-rotation of some of the samples, and the slight rota- 

 tion to the right of the others, suggest the presence of that 

 terpene. The alcohol for the solubilities was 70% by 

 weight. The resorcinol determination of the cineol was 

 taken in the fractionated oil in that portion distilling below 

 190° O. The results are altogether too high if taken with 

 the commercial sample directly, as higher boiling con- 

 stituents are absorbed by the resorcinol. Where the per- 

 centage amount of cineol is definitely stated the results 

 were carefully determined. In those cases where the 

 amount is stated as being over 70% the percentage is 

 approximate only. The specific gravities were corrected 

 for 15° C, the factor 0*00075 for each degree above that 

 temperature being used. 



Second Hour Oil. 



This sample of the second hour oil was forwarded to us 

 by Mr. O. Gough of Yourie, and was a portion of the second 

 hour oil he had commercially distilled. It was but little 

 coloured, and had quite an aromatic odour. It had specific 

 gravity at 15° C. == 0*9291; rotation a D + 2*2°; refractive 

 index = 1*4720; and was soluble in 1*1 volumes 70% alcohol. 

 On distillation, 64% came over between 172° and 193° (cor- 

 rected). This fraction had specific gravity 0*9131 at 15°; 

 rotation a D + 3*3°; refractive index 1*4655, and contained 

 31% cineol by the phosphoric acid method, representing 

 20% cineol for the second hour oil. 25% came over as the 

 second fraction, boiling between 193° and 227° O. This had 

 specific gravity 0*9283; rotation a D - 0*2°; and refractive 

 index 1*4760. 



The saponification number for the esters in the second 

 hour oil was 11*4, while in ^he acetylated oil it was 95*1. 

 This latter figure represents 33% of ester if calculated for 

 a OioHi 7 OH alcohol. 



