I 



to tin appearance ol the bark, and ol the tree generally. 1 In- chemistrj ol 



the exudation also shows this tree not to belong to the " Pepperrainl 

 group. 



The following table gives the general results d with the crude oils 



oi this species from four localities giver abovi I h. yields ol oil were from 



leaves and terminal branchlets collected as for comi oil distillation. 



Mt, 



Yield of nil pei cenl 



Sp< i Hi' gravity al 15 C. 



( Optical rotation .< 



Refractive index a1 20' C. 



Solubility in 10 volurro ohol 



Phellandrene 



Cineol 



Amount distilling above 245 C. 

 Saponification number for ester + free arid 

 Saponifii ation number after acet} lation 



045 



9249 



+ 43 



1 4848 

 insoli 



trai i 



ii. i. 



mil July, 



11 5 s 



t 17 



ditto 

 ditto 

 ditto 



7" 

 »4 



Arm 1 



. :21 



+ 5 



1 I 



ditto 



ditto 

 preseni 1 



well 

 marked. 



55% 



5 7 



field, 

 12th 



058 



■ m 2 



ditto 



none 



traces 



69 



On rectifying the crude oil of the Tenterfield sample, 1 per cent, distilled 



below 159° C. (corr.). Between 159-170°, to per cent, distilled j between 



170-245°, 9 percent, came over ; and between 245 273 , 76 pei cent. ; over 50 per 



cent, distilling between 265 273°. These fractions gave the following results :— 



First fraction, sp. gr. at 15° C. =0-8652; rotation ./,. + 30-3°; refractive 



index at 20° = 1-4674. 

 Second ,. ,, ,, =0-8713; rotation a D + 22-4°; refractive 



index a1 20 = 1-4720. 

 Third ,, ,, ,, =0-9326; rotation a D 2-1°; refractive 



index at 20' = 1-4984. 

 The lighl pa— ed the third fraction very well when diluted with chloroform. 

 The two first fractions were again distilled, when 9 per cent., calculated on the 

 original oil, came over between 156 137 1 . This fraction had specifii gravity al 

 15 = 0-8631; rotation a + 31-6°; refractive index at 1 |.668, and was 



almost pure pinene. The nitrosochloride melted at n>; 1 . The oil oi this 

 ies 1- one of the best from which to obtain the sesquiterpene. 



The fractions distilling below 1 70 ", as firsl obtained, had the follow 

 specific gravities and rotations:— 



Tenterfield sp. gr. at 15° C. = 0-8652; rotation^ + 3°'3°- 

 Armidale .. ,, = 0-8705 ; + 24-4 



Trail, , ., = 0-8638; .. + 27-7°. 



Wal< ha .. = 0-8670; + 33-07°- 



rhe crude oil of th il sampli from Walcha had specifii gravitj al 



15° 1 0-907; rotation refractive index al 20°= r- 4843, and was 



insoluble in 10 volumes 80 pei cenl alcohol rhe saponification number for 



the 1 id was 5-1 



