254 ODOROGRAPHIA. 



distilled by E. Mojon, of Algiers. It has also been introduced into 

 the South of France. The odour of the oil reminds of that of 

 E. odorata. ]\Iessrs. Schimmel say it has a powerful odour of 

 Valerianic aldehyde, and that it is rich in cineol ; they determined 

 its sp. gr. to be 0*924 at 15^ C, and the optical activity 

 + 12° D^' in a 100 m. m. tube.* 



E. Baileyana, Mueller, is a "stringy bark" eucalypt of local 

 distribution, being confined to iSTorthern New South Wales and 

 Southern Queensland (Brisbane). The fresh leaves yield 0*9 per 

 cent., which, according to Maiden, has a melissa-like perfume, and 

 sp. gr. 0*980, which may be a mistake, as Staiger (the Government 

 chemist) states it at 0*890. 



E. dealbata is confined to the drier portion of Queensland 

 and New South Wales. Its oil is considered by some persons to 

 possess the finest odour of all the eucalypts. It is something 

 between lemon and melissa, sp. gr. 0*885 ; boiling from 206^-216°. 



E. maculata, var. citriodora, Hook, sometimes called 

 " The citron-scented eucalypt." It is found along the Queensland 

 coast districts and southwards to Port Jackson. It is a variety of 

 the well-known " spotted gum " of New South Wales, whose leaves 

 jjossess no marked perfume. The citriodora variety is especially 

 abundant in Port Curtis district, and near the town of Gladstone 

 (Queensland), and an enterprising pharmacist there has entered 

 into the distillation of the oil largely, working off half-a-ton of 

 leaves daily. 



The yield from the fresh leaves is said to l^e 1 J per cent. From 

 the dried leaves as much as 3*7 has been obtained. Its sp. gr. has 

 been determined by Messrs. Schimmel at 0*873 at 15° C, who give 

 the following information-]- concerning it : — "When distilled, about 

 I of it goes over betw^een 205° and 210°, while smaller fractions 

 boil under and over those temperatures. The fraction 205°-210°, 

 amounting to about 75 per cent, of the crude oil, consists almost 

 entirely of pure Citronellon." Some samples more recently 

 examined (received from the Queensland Eucalyptus Company have 

 been found to contain as much as 95 per cent, of citronellon ; the 



* Witt.stein and Mueller state the sp. gr. as 0"918, and the boiling point as 

 137M8rC. 



t Bericht, Oct., 1890. 



