400 THE EXAMINATION OF EUCALYPTUS KINOS, 



sideroxylon and leucoxylon being distinct species), but I give it 

 for completeness. The typical E. sideroxylon does not appear to 

 extend to Queensland. 



" E. leucoxylon": bark white on the branches, more persistent 

 on the trunk ; var. minor, C. Ext. (Bailey). See also Scortechini, 

 P.L.S.N.S.W. viii. 248, who states that this variety barely crosses 

 the boundaries of Queensland, near Wilson's Peak, South .Queens- 

 land. 



Memo. — Bentham (B.F1. iii. 210) states "this variety seems 

 almost to pass into E. melliodora" and certainly the kino of that 

 species and that of E. leucoxylon, F.v.M., strongly resemble each 

 other. 



No. 45. "Blue Gum" of South Australia. Kino received from 

 Mr. W. Gill, F.L.S., Conservator of Forests, South Australia, 

 July, 1891. 



This is apparently a freshly exuded sample, being very bright 

 and sparkling in appearance. Its general colour is a warm sienna- 

 brown ; it is easily reducible to a powder between the fingers, 

 such powder having a bright yellow colour, almost chrome. It is 

 very new, which accounts for some of the brightness of colour. 

 Its general behaviour at once places this kino in the turbid group. 



Behaviour and appearance iu water similar to E. corynocalyx 

 sample. In alcohol it does not entirely dissolve ; the supernatant 

 liquid is bright, clear, and of a reddish-brown colour ; the liquid 

 is very turbid when agitated. 



Its composition (determined August, 1891) is : — 

 Catechin and tannic acid ... 79*279 



Ligneous matter, &c. ... ... 4-9 



Moisture 14*95 



Ash -871 



100-000 

 Tannic acid determination (Lowenthal) 21*5 per cent. 

 MM. E. Heckel and Fr. Schlagdenhauffen ( Le Naturaliste, 

 July 1, 1890, p. 151) have been experimenting upon some kinos 



