2IQ 



rib. Peduncles axillary or lateral, flattened, recurved, up to 12 lines long, with 

 umbels of from three to six flowers. Buds on thick pedicels, 2 to 3 lines long ; 

 calyx tube somewhat bell-shaped, 3 lines in length and half as long as the blunt 

 sub-cylindrical operculum. 



Fruit. Inclined to bell-shaped, but somewhat 

 conical, slightly ribbed, length of pedicel 

 variable ; rim inclined to flat or only 

 slightly convex ; valves acuminate, re- 

 curved, well exserted ; often 6 lines long 

 and 5 lines in diameter. 



The fruits are fairly characteristic and not easily 

 confounded with those of any other species. 



Habitat. South west of Western Australia. 



REMARKS. A species easily determined in the field and herbarium. In the young or early [trees 

 the bark is inclined to be smoothish, when it is collected and placed on the market as " Mallet bark." In the case 

 of the more mature trees the bark becomes rough and is not collected for tanning purposes, the percentage of tannin 

 of course being less owing to the outer corky ridges, in which case there seems no reason why " rossed " bark should 

 not be used for tanning. 



ESSENTIAL OIL. Material for distillation was forwarded from Western 

 Australia in June, 1904. It was collected at Narrogin, on the Great Southern 

 Railway, and consisted of leaves and terminal branchlets collected as for com- 

 mercial distillation. The yield of oil was 0-95 per cent. The crude oil was 

 reddish in colour and had an odour resembling the cineol-pinene oils generally, 

 with a secondary one indicating aromadendral. Pinene was found in some quantity, 

 and it belonged principally to the dextro-rotatory form; phellandrene was absent. 

 More than a third of the oil consisted of cineol, and a large amount of the ses- 

 quiterpene was also present. The higher boiling constituents were in such 

 quantity that only 75 per cent, of the oil distilled below 183. The esters were 

 small in amount, and the volatile aldehydes not at all pronounced. The 

 presence of aromadendral, together with other characters, suggest that the 

 species approaches somewhat closely the group of typical ' Boxes," such as 

 E. hemiphloia, &c. 



The oil of this species has no special properties, and at present has little 

 value for commercial purposes. 



The crude oil had specific gravity at 15 C. = 0-9135 ; rotation a D + 9-0 ; 

 refractive index at 20 = 1-4717, and was soluble in i volume 80 per cent, alcohol. 

 The saponification number for the esters and free acid was 2-5. 



On rectification, i per cent, distilled below 165 C. (corr.). Between 

 165-172, 44 per cent, distilled; between 172-183, 30 per cent, came over; 

 between 183-228, 10 per cent, distilled, and between 228-264, 10 per cent, 

 distilled. These fractions gave the following results : 



First fraction, sp. gr. at 15 C. = 0-8981 ; rotation a D + 177. 

 Second ,, ,, = 0-9134; + 8-2. 



Third ,, ,, ,, = 0-9329; ,, 3-2. 



Fourth ,, ,, = 0-9415; ,, not taken. 



The Isevo-rotation shown by the third fraction, was due to the aroma- 

 dendral. 



The cineol was determined by the phosphoric acid method ; the result was 

 36 per cent. (O.M.) 



The results obtained with the oil of this species were published by us in 

 the Pharmaceutical Journal, London, September, 1905. 



