413 



of the second, + -7"i°- ihe rotation of the third fraction could not be taken 

 with certainty, but when dissolved in ether it wa'^ Isevo-rotatory. The refractive 

 index at 21° C. of the first fraction was 1-4736; of the second, 1-4733 ; and of the 

 third, 1-5093. 



The somewhat close agreement between the first and second fractions would 

 seem to indicate that pinene is the principal terpene in this oil, biit the lower specific 

 gravity of the second fraction suggests that limonene was also present. The small 

 amount of oil did not, however, allow of its separation. The nitrosochloride was 

 prepared with the first fraction, and this melted at 108° C. This result, taken 

 with the others, confirms the presence of pinene in the oil of this species. 



The higher boiling fraction, when dissolved in chloroform and agitated with 

 a few drops of sulphuric acid, became at first greenish in colour and eventually 

 passed through purple to blue. On heating the blue solution it became red, and 

 the same results were obtained when the oil was dissolved in glacial acetic acid. 

 The oil was sparingly soluble in alcohol and in acetic acid, but readily in ether. 



The ethereal solution was saturated with hydrochloric acid gas and stood 

 on one side for some days ; it was of a blue colour. The ether was then evaporated 

 off, and the residue allowed to stand. After about two weeks a crystalline mass 

 had formed ; this was placed on a porous plate to absorb the liquid portion, and 

 the crystals were then purified from hot ethyl-acetate. The crystals melted at 116° 

 C. which is very close to that required for cadinene dihydrochloride. 



The above results show that the sesquiterpene cadinene occurs in the oil 

 of this plant. 



When agitated with a concentrated solution of sodium bisulphite, a small 

 amount of a crystalline substance formed, thus indicating the presence of an 

 aldehydic body ; but the quantity was too small for it to be determined. 



IV. TIMBER. 



It is too small for commercial purposes. 



