ON SOME N.S.W. TAN-SUBSTANCES. 83 



7. In the report of the Board of Enquiry on Wattle Bark, 

 appointed by the Victorian Government (1878), allusion is made 

 to the character of the soil on which the wattle trees grow. It 

 is shown that (as far as the experiments go) limestone country 

 produces wattles comparatively weak in tannin. The subject is 

 interesting, and should be followed up. I have therefore put the 

 geological formation in each case. 



8. The tabular form for the presentation of qualitative results 

 has been adopted for two reasons. Firstly, unnecessary repetition 

 of the names of re-agents &c, is avoided, and secondly, the work 

 of comparing the various barks will be greatly facilitated. 



9. Mr. W. Bauerlen has collected the material from the 

 Southern and Mr. K. H. Bennett from the Western Districts. 

 Mr. H. G. Smith has afforded me much assistance during the 

 progress of my work.* 



14. Angopiiora intermedia, DC, N.O. Myrtacere, B. Fl. iii., 184. 

 Found in Victoria, ISTew South Wales and Queensland. 

 Vernacular Name — "Apple-tree" (in common with other 



species of the same genus). 

 Locality whence this particular specimen was obtained — 



Colombo, near Candelo, N.S.W. 

 Geological Formation — Granite. 

 Part of Tree Examined — Kino. 

 Particulars of the trees whence it was obtained — Height 30 



to 50 feet, diameter 2 to 4 feet. 

 Collected 30th June, 1887. Analysed 13th to 22nd July, 



1887. 



A kino of a reddish-brown colour, and of a brittle nature. From 

 "this circumstance, the small masses in which it is obtained speedily 

 lose their bright fresh appearance. It forms a dull-looking powder. 



Extract. — Dissolves in water at 100° C. to the extent of 90*7 

 per cent., leaving a residue of a yellow-ochre colour. The solution 

 becomes turbid on standing. On again raising the temperature, 

 the suspended matter gradually aggregates, until, when the boiling 

 point is reached, it collects into a few large nocculent masses, 

 which eventually re-dissolve in the boiling liquid, though with 

 difficulty. 



* These series of notes, as also the qualitative ones, are jotted down as 

 they occur to me, and, except a particular reference is made, are intended 

 to apply generally to the substances referred to in the papers. 



