ABSTRACT OF PROCEEDINGS. XV. 



quantity, a sugar being separated at the same time. The 

 u kino red" dyes mordanted cloth a series of browns, 

 alumina giving the best colour. When fused with potash 

 it forms protocatechuic acid but not phloroglucinol. The 

 sugar had no rotation, was reduced by Fehling's solution 

 readily, was slowly but entirely fermented by yeast, and 

 gave an osazone soluble in hot water, and which melted at 

 176 — 178° C. Were it not that it was inactive to light it 

 might, from these reactions, be supposed to be melibiose, 

 which is formed from melitose (Eucalyptus sugar) by hydro- 

 lysis, levulose being split off at the same time. This 

 glucoside, for which the author proposes the name Empliloin, 

 (as it principally occurs in the bark of certain species) is 

 found in almost a pure condition in those Eucalypts known 

 as " Ironbarks." The kinos of the " Stringy barks " and of 

 the " Peppermints," although consisting of the same tannin, 

 do not contain sugar and are not glucosides, but the author 

 has already isolated glucoside, Myrticolorin, from the 

 "Stringybarks," the sugar of which is glucose. This kino 

 glucoside is practically a bark product, occurring in species 

 which do not appear to give Eucalyptus Manna. Melitose 

 however, is found in the bark of certain species in which 

 the tannin is principally located in the wood, as in E. 

 pi tata. For these reasons the author thinks that meli- 

 tose itself should be considered a glucoside, the third glucose 

 molecule taking the place of the tannin in the glucoside. 

 The quantitative results, and the relative astringent values 

 show the substance to contain an equivalent to two glucose 

 molecules. Although entirely precipitated by gelatine, 

 the glucoside has very slow action on hide, and thus the 

 sluggishness of "Ironbark" liquors is accounted for. It 

 now remains to devise a method whereby the glucoside 

 may be cheaply hydrolysed, and thus the tannin in the bark 

 of E. sideroxylon, for instance, be made available for tan- 

 ning purposes. 



