217 



ESSENTIAL OIL. Leaves and terminal branchlets for distillation were 

 received from Thirlmere, N.S.W., in September, 1906. The yield of oil was 

 0-31 per cent. The crude oil was of a light reddish-brown colour, and had the 

 characteristic appearance and odour of the typical " Box " oils generally. The 

 secondary odour of aromadendral was very pronounced. 1'inrne was only present 

 in small amount and phellandrene was absent. Cineol was detected, but only 

 to the extent of 5 to 8 per cent. Cymene was a pronounced constituent. 

 Altogether the results show this oil to be closely associated with those of E. 

 hemiphloia, E. Woollsiana, &c. 



The crude oil had specific gravity at 15 C. = 0-9042; rotation a n -,- 8-5; 

 refractive index at 20 = 1-4841, and was soluble in i volume 80 per cent, alcohol. 



On rectification, 2 per cent, distilled below 171 C. (corr.). Between 

 171-178, 35 per cent, distilled, and between 178-205, 37 per cent, distilled. 

 These fractions gave the following results : 



First fraction, sp. gr. at 15 C. = 0-8893; rotation <? -- 1-7. 

 Second ,, ,, ,, = 0-9130; ,, -6-8. 



The laevo-rotation of this oil is' due to the aromadendral. Esters were 

 only present to a small extent, as the saponification number was 6-1. 



113. Eucalyptus salubris. 



(F.v.M., in Fragm. x. 54, 1876.) 

 Gimlet Gum. 



Systematic. A tall tree, with a smooth, thin bark, stem usually much 

 twisted. Branchlets often green in colour. Abnormal leaves ovate-lanceolate, 

 petiolate. Normal leaves small, lanceolate, acuminate, shining, older leaves 

 particularly so ; venation more prominent in younger leaves, intramarginal vein 

 close to the edge, lateral veins spreading, inclined at about 30 to the mid-rib. 

 Peduncles flattened, about 3 lines long, at first axillary, later lateral, with umbels 

 of three to six flowers. Buds shining ; calyx tube about i line long, semi-ovoid, 

 pedicel twice as long; operculum blunt, conoidal, 2 lines in length. 



Fruit. Small, truncate, pyriform, tapering to a 



short angular pedicel, shining ; rim convex ; ( ^jL & 

 valves slightly exserted ;' 2 lines long and 2 3? 



.lines in diameter. 



The capsule comes closer in form to that of E. squamosa 

 than perhaps to any other species. 



Habitat. Western Australia. 



ESSENTIAL OIL. Material for distillation was received from Western 

 Australia in July, 1904. It was collected at Mine's Hill, Great Eastern Railway, 

 and consisted of leaves and terminal branchlets cut as would be done for 

 commercial purposes- The yield of oil was 1-39 per cent. The crude 

 oil was of a light r<|ifcsh-brown colour, and had a very distinct odour of 



50008 P 



