approached the minimum of 60 per cent. When the oil was distilled directly 

 under atmospheric pressure, the ester was partly decomposed. (See the article 

 in this work on " Geraniol and its acetic acid ester.") 



Oil from the Leaves. Leaves and terminal branchlets for distillation were 

 obtained from Wingello, N.S.W., in October, 1900. The yield of oil was 0-12 

 per cent., 500 Ib. of leaves and branchlets giving 9 ounces of oil. This appears 



PLATE LXXVIII. 



note.] 



[M. F. Connelly. 



EUCALYPTUS MACARTHURI (D. a M.) 



PADDY'S KIVKR BOX. 



Near Wingello, N.S.W. 



to be a minimum yield, as the average more nearly approaches o - 2 percent. The 

 crude oil was red in colour, and consisted principally of the ester geranyl-acetate, 

 free geraniol, and eudesmol, with some pinene. 



The crude oil had specific gravity at 15 C. '= 0-9245; rotation a D + 3-6; 

 refractive index at 20 = 1.4706, and was soluble in ij volumes 70 per cent, 

 alcohol. The saponification number for the esters and free acid was 173-4, equal 

 to 60-6 per cent, of geranyl-acetate. The dextro-rotation of the crude oil was 

 partly due to the activity of the eudesmol. 



On rectification, i per cent, distilled below 172 C. (coir.). Between 

 172-219, 10 per cent, distilled; between 219-229, 63 per cent, distilled; the 



