338 DESCRIPTION OF A NEW SPECIES OF EUCALYPTUS, 



Leaves of this Eucalyptus were procured and distilled at the 

 Technological Museum. Messrs. Baker and Smith report on the 

 oil as follows : 



The oil obtained from the leaves of this species by steam-distil- 

 lation is of excellent quality, and consists very largely of 

 eucalyptol. In its general characters it corresponds to the 

 essential oils obtained from the members of the " Gum-Group " 

 of Eucalypts, and, therefore, closely approximates to the oil dis- 

 tilled from Eucalyptus globulus, although it is even richer in 

 eucalyptol than the oil from that species The rectified oil is 

 slightly yellowish, and, as is common with the crude oils of this 

 group, contains a small amount of volatile aldehydes. The 

 amount of ester present was but small. The oil contained a 

 small quantity of dextrorotatory pinene, but phellandrene was 

 quite absent. No less than 93 per cent, of the crude oil distilled 

 between 167^ and 190'-"'C., and in this fraction the eucalyptol 

 was determined by the resorcinol method, and calculated for the 

 crude oil. The yield of oil is unfortunately not great, and 271 lbs. 

 of leaves with terminal branchlets gave only 29|^ ounces of oil, 

 equal to 0-681 percent. When rectified, the oil from this species 

 would produce an excellent oil for pharmaceutical purposes. 

 The crude oil had the following characters : — 

 Specitic gravity at 15°C.=0-9177 

 Rotation ap in a 1-dcm. tube= + 3*6°. 

 Refractive Index at 25^ C. = 1-4678. 

 Soluble in 1'15 volumes 70 per cent, alcohol by weight. 

 Saponification number of ester with free acid = 5-6 



If calculated entirely as ester there was 1-96 per cent, 

 considered as geranyl acetate. 

 Eucalj'-ptol (by the resorcinol method)=83 per cent. 

 The large fraction (93 per cent.) had specific gravity at 15^^ = 

 0'9155; rotation a^-f 3-5 '^^ refractive index at 27° = 1'4651. It 

 was soluble in 1*1 volume of 70 per cent, alcohol. 



On continuing the distillation, 2 per cent, of a yellow oil came 

 over between 225° and 235°C. This had specific gravity 0-9285 

 at 15°, and a refractive index above 1*51. It had an odour 



