"210 R. T. BAKER AND H. G. SMITH. 



• On rectification under atmospheric pressure, only 2 per 

 cent, distilled below 265° C. This portion contained, 

 besides some water, a little aldehyde (in which the odour 

 of benzaldehyde was readily detected), a very little cineol 

 and some terpenes. Between 265 — 273° C. only 2 cc. 

 distilled; but between 273-277° no less than 70 per cent, 

 distilled, and between 277-280° 12 per cent, more came 

 over. The last two fractions gave the following results: — 

 Sp. gr. at 15°C. Rotation a v Ref. ind. 23°C. 

 Fraction (265 - 277°) 0*8882 + 9°.7 1*4830 



Fraction (277-280°) 0*8937 + 12°.4 1*4876 



A portion of the crude oil was boiled with acetic anhy- 

 dride and anhydrous sodium acetate for If hours in the usual 

 way, well washed and dried. 1*5732 gram, required 0*2184 

 gram. KOH. so that the saponification number from this 

 was 138*8 ; representing 55 per cent, of an alcohol (O15H26O). 

 Another acetylated sample of the oil gave corresponding 

 results. More than half the oil thus consisted of this 

 sesquiterpene alcohol. Probably the greater portion of the 

 remainder of the oil consisted of the corresponding sesqui- 

 terpene to this alcohol; this is suggested from the figures 

 for specific gravity, boiling point, etc., so far obtained. It 

 also seems as if the sesquiterpene has a higher rotation 

 than has the alcohol. This will be proved later. 



Terrigal Trees (21/12/1911). 



The sample of oil from the Terrigal material (60 miles 

 north of Sydney), was identical in appearance, colour, and 

 odour with that from Rose Bay, and it had the same slight 

 viscous behaviour. The yield of oil from the leaves and 

 terminal branchlets was 0*923 per cent. This is higher 

 than that obtained from the Rose Bay material, perhaps 

 due to a difference in the age of the trees, or to location. 

 A somewhat larger amount of terpenes was present in 

 this oil, as was found also to be the case with the oil from 



