93 



with two hours' contact [4-8. Aftei acetylation the number was 73-7, and in 

 the cold 59. ["he indication is thus for a considerate amounl oi al( oholii bodies, 

 Imt these are so mixed, that the moleculai value cannot be stated. The ald< 

 li\ de absorption was 8 pei 1 ent. 



On rectification, no Irs-, than Nl pei cenl distilled below [53 < . con 

 Between 13.; 171 . e8 percent, distilled; between 171 193 63 pei cent, came 

 over, and between ioi _'i 1 . 8 per cent. Hiese fractions gave tin- following 



(". = o-N;a.i ; rotation a B + t 1 , refractive 

 index at 20° = 1-4158. 

 = 0-887(1; rotation </„ + 15-6 ; refractive 



index at 20° = 1-4580. 

 = 0-1,077; rotation a + 9-5' ; refractive 



index at _>o° = 1-4'' 

 = 0-924^; rotation a D + 2-1°; refractive 

 index at 20 = 1-407.^. 

 The eineol was determined by the resorcinol method in the portion dis- 

 tilling between 153 193 ; the result calculated for the original oil was 57 per 

 cent. By the phosphoric acid method the eineol was ;i per cent., tint- showing 

 a large proportion absorbed by resorcinol other than eineol. 



In the endeavour to locate these constituents a portion was separated, 

 boiling between 151-192°; the amount which came over between those tempera- 

 tures was 83 per cent. This fraction had specific gravity at 15 C. = 0-9033; 

 rotation ti lt + io-8° ; refractive index at 20° = 1-4628. Saponification number 

 15-7, and in the cold with two hours' contact it was 1 ;. After acetylating, the 

 number was 42, thus showing that a considerable portion of the alcoholic bodies 

 were high boiling. The eineol determined by the resorcinol method was 67-5 per 

 cent. ; and by the phosphoric acid method 40 per cent, by two determinations 

 The aldehydes by absorption were 6 per cent., and calculating for amyl alcohol, 

 and butyl-butyrate as ester, a considerable portion of the absorbable bodies still 

 remains unaccounted for, thus indicating the presence of an unreactive con- 

 stitueni which is also absorbed by resorcinol. 



44. Eucalyptus quadrangulata. 



ill I) & J. 11 M., Pro Linn Soc, N.S.W., 1899, p. 451, t. XXXIX.) 



Grey Box. 



Systematic. A tree oi No to 100 feel and diameter ol 2 to 4 feet. Bark 

 very much resemble-, that oi ordinary " Box," E. hcmiphloia. in general appear 

 ance, but is more fuzzj and softer than the latter. I he branches have smooth 

 tip-. Abnormal leaves narrow-lanceolate, cordate and clasping at the base, 

 strictly opposite, markedly paler on the under surface. The early stems are 

 brown commonlj chocolate-brown .and usuahA square in section and winged. 

 Normal leaves branchlets angulai , lanceolate or narrow-lanceolate, sUghtly 

 falcate, usually 4 to 6 inches Ion-, scarcely paler on the under surf ace ; venation 

 conspicuous on both sides, the intramarginal vein conspicuous!} removed from the 



