BY J. H. MAIDEN. 1283 



It dissolves readily in cold water, forming a very pale-coloured 

 solution of an orange-brown colour. Colour of residue Vandyke 

 brown. 



Eucalyptus resinifera, Smith, B.Fl. iii. 245. 



Found in N. S. Wales and Queensland. 



" The specific gravity of this Kino is about 1*416 and the per- 

 centage of tannin 65 '57 (s^c)" (Staiger). 



Dr. Joseph Bancroft quotes another analysis by Mr. Staiger 

 of this Kino, in which he found 54 per cent, of Kino-tannic acid, 

 and " also a kind of gum-arabic, but in older samples the amount 

 of Kino-tannic acid is greater, and the gum less." I have no 

 particulars of the above Kinos, so I am unable to say how far Mr. 

 Staiger's analyses and my own are reconcileable. 



In the Catalogue of the Museum of the Pharmaceutical Society 

 of Great Britain (p. 46), a Kino called E. resinifera, Lin. (a mis- 

 print probably for Cunn., and therefore the species would be E. 

 siderojyhloicc), is catalogued, and the statement is made that "This 

 gum may be recognized by its reddish tint and powdery surface." 

 Neither of the Kinos of the two E. resiniferas answers to this 

 description ; such a Kino would probably be allied to E. rostrata 

 (a member of the Turbid group). 



No. 28. "Mahogany." Received from the Government Botanist 

 of Queensland (Mr. F. M. Bailey), February, 1888. 



In smallish tears for the most part, showing firmly adherent 

 wood or bark on one side. A clear-looking Kino of a dark colour, 

 showing a dark ruby colour by transmitted light. It has evidently 

 been collected for a long time. It is inclined to be tough and 

 horny, and is therefore rather difiicult to powder. Fracture bright. 

 Colour of powder of a pure burnt Sienna. 



Cold water forms a deep orange-brown coloured liquid, which 

 tins out to a 1 

 Vandyke brown. 



thins out to a bright orange-brown colour. Colour of residue 



