188 ODOROGEAPHIA. 



that on fractional distillation the crude oil was separable into six 

 parts ; the first five being dextrogyre, but gradually less strongly 

 so, and the fifth portion was Itevogyre ; the observations were made 

 in a tube of 25 millimetres : — 



1 Oil distilling at 172^ to 180^ C + 26^-9 



2 „ 180° to 183^0 + 23°-6 



3 „ 183° to 184°-oC + 21°-2 



4 „ 184° to 195° C + 18°-2 



o „ 200° to 230° C + 13°-4 



6 Thick yellow residue — 1°-4 



^Vhen the crude oil is mixed with concentrated sulphuric acid 

 it thickens and acquires a deep orange colour. On mixing the 

 first fractionated portion with four times its weight of concentrated 

 sulphuric acid, mixing with water and redistilling, the distillate is 

 laevog;j^re. 



A new Elemi has recently been described by J. H. Maiden 

 (Curator of the Technological Museum, Sydney).* The oleo-resin 

 (sample of which was forwarded by Mr. Bailey, Colonial Botanist 

 of Queensland, and analysed by Mr. Mar, Government analyst) is 

 an exudation from the Canarmm Muelleri, Bailey, a tree which is 

 found in the vicinity of the Johnstone Paver, Queensland, and is 

 botanically described in the Catalogue of Queensland plants, p. 

 106, where the following note occurs : — " Upon cutting a log of 

 this tree, Dr. Bancroft observed a flow of honey-like liquid, having 

 a delicious turpentinous odour admixed with lemon, very different 

 to the odour of the official elemi. When digested in cold alcohol 

 the lemon odour is so strongly brought out as to almost bring this 

 substance into the category of a perfume." " The oleo-resin of 

 Canarium Muelleri consists of a solution of an amorphous. resin in 

 a volatile oil, — the following being the proportions: — 



Ptesin (soluble in alcohol and ether) ... 73-33 

 Volatile oil 26-67 



100-0 



It possesses no particular affinities to Manilla Elemi. No 



amyrin or other acicular crystals could be detected. There is no 



fennel odour, as in Manilla Elemi. AYhen exposed to the 



atmosphere it steadily diminishes in intensity of odour, while the 



* Proc. Eoy. Soc, Queensland, viii., p. 3. 



