BY J. H. MAIDEN. 1281 



When tlie Tronbark Kinos are of the same age, 1 doubt whether 

 they can be distinguished from each other. They darken with age, 

 like other Kinos, colour being with Kinos often simply compara- 

 tive. They are bright looking, and often with an almost greasy 

 lustre, are obtainable in large pieces, for their tenacity is such 

 (owing to the gum they contain), that they do not easily break into 

 small pieces like the Ruby Kinos, — much less do they break into 

 powder like the members of the Turbid Group. They stick to the 

 teeth if chewed. 



Following is a detailed account of such of the " Gummy " 

 Kinos as have fallen into my hands, up to the present. I reserve 

 the publication of an exhaustive analysis of a typical Kino of 

 each of the groups for another occasion. 



In the case of E. siderojyhloia, I have described several Kinos of 

 different ages, the object being (as in the Ruby Group), to show the 

 variability in appearance, and the range of variability of compo- 

 sition. 



Eucalyptus crebra, F.v.M., B.FL iii. 221. 



" Narrow-leaved Ironbark," though, as Dr. Woolls has pointed 

 out, there is a narrow-leaved form of U. jjct'^icidata, for which 

 this species may be mistaken. Extends from N. S. Wales to 

 Northern Australia. 



No. 25. I am indebted to Mr. R. T. Baker for this sample ; he 

 obtained it 7th Oct. 1889, at St. Mary's, South Creek, N. S. Wales. 



It cannot be distinguished in outward appearance from that of 

 £J. siderojyhloia (No. 31) below. 



Eucalyptus leucoxylon, F.v.M. (Syn. E. sideroxylon, A. Cunn. 

 B.Fl. iii. 209.) 



Found in N. S. Wales and Queensland. 



Dr. Wiesner (loc. cit.), says of this Kino, " Same reaction as 

 £. globulus.'^ Large black-red lumps, with fibrous impurities." 



* I have not yet been able to obtain Kino of this species, so I am unable 

 to criticise the comparison. 



