38 ON SOME N.S.W. TAN-SUBSTANCES. 



powder. This kino is rather tenacious, adhering readily to pestle 

 and mortar, and yielding a dull, orange-coloured powder. It 

 dissolves readily, and almost entirely, in cold water. Mr. Bauerlen 

 who collected this kino, informs me that it is the most readily 

 soluble one he has met with, the least shower of rain softening it 

 on the trees. However true this may be of the fresh substance, six- 

 months old E. amygdalina kino is unmistakeably more soluble 

 than E. Sieberiana kino of similar age. Extract — Water at 1 00° C. 

 dissolves 95*04 per cent, leaving 4*96 percent, of a liver-coloured 

 resin greatly resembling broken stick lac in appearance. Of this 

 resinous residue a portion equal to 0-94 per cent, of the total 

 quantity of kino acted upon, is soluble in alcohol at 60° F: 91*8 

 per cent, of the kino is soluble in alcohol at 60° F. The kino 

 yields 36 '9 6 per cent, of kino-taimic acid. 



Qualitative Tests — ( Dilute extract). 



1. Reaction distinctly acid. 



2. Equal volume of sulphuric acid (1 in 5). In the cold, dense 



salmon ppt. On boiling, clear dark ruby liquid. 



3. Bromine water- — Like E. amygdalina. Ppt perhaps a little 



more dense. 



4. Dilute ferric chloride — Like E. amygdalina. Add Ammonia 



—Ditto. 



5. Baric hydrate — Like E. amygdalina. 



6. Ammonium sulphide. — Ditto 



7. Potassium bichromate — Ditto 



8. Tartar emetic — Ditto. — Add Ammonium chloride — Ditto 



9. Copper sulphate — Ditto. Add Ammonia — Copious brownish- 

 black ppt. 



10. One drop of strong sulphuric acid to one drop extract (on a 

 white glazed tile). Same as E. amygdalina only less intense. 



11. Like E. amygdalina. 



12. Manganese sulphate — No change. 



13. Chrome alum— No change. 



14. Mercuric chloride — Like E. amygdalina. 



15. Hydrodisodic phosphate — Copious pink gelatinous ppt, in 



this respect different to E. amygdalina. 



16. Potassium ferrocyanide — Like E. amygdalina. 



Eucalyptus leucoxylon, F. v. M., (E. siderbxylon, A. Cunn.) N.O. 

 Myrtaceffi, B. Fl. iii., 209. " Red-flowering Ironbark." 

 Found — In all the Colonies except Tasmania and Western Australia. 



Locality of the particular specimen now under examination : — 



Near Richmond, N.S.W. 

 Remarks — The bark of the trunk. Diameter of stem 3 feet from the 



ground, up to 12 inches. Height of tree, 40 to 50 feet. Date of 



Collection, July, 1886. Date of Analysis, 17th and 23rd May, 1887. 





