'202 ON SOME N.S.W. TAN-SUBSTANCES. 



Polygonum amphibiwm: Tannin. 



Leaves ... ... ... ... ... 18 per cent. 



H. R. Procter, " Text-book of Tanning." 

 1 Leaves '.. LI J 



" Gardener's Chronicle." 



49 Grevillea striata, R. Br., N.O. Proteacea*, B. Fl. v., 462. 

 Found in all the Colonies except Victoria and Tasmania. 

 Vernacular Name — " Beef wood " 

 Locality whence this particular specimen was obtained — 



" Near the Darling," not far from Wilcannia. 

 Part of the Tree Examined — Bark. 

 Particulars of the trees whence it was obtained — Height up 



to 40 feet, diameter 12 to 15 inches. 

 Collected 14th October, 1886. Analysed, 19th August to 



2nd September, 1887. 



The timber of this tree is beautifully marked, hence its local 

 name. Bark very rugged-looking, very similar in appearance to 

 an " Ironbark," but softer. Prevailing colour dark grey ; inner 

 bark warm reddish-brown, and pitted, having the characteristic 

 appearance of Proteaceous barks. Average thickness ^ inch. 

 General appearance of powder dark reddish-brown with particles 

 of light fibre disseminated through it. 



Extract. — Yields 22*02 per cent, to water at 100° C. Solution 

 of a very intense ruby colour. Colour of moist residue dark 

 purplish-brown, inclining to Vandyke-brown. 



Tannic acid — 17*84 per cent. 



50. Hakea leucoptera, R. Br., N.O. Proteacere, B. Fl. v., 515. 

 Found in South Australia, Victoria, New South Wales and 



Queensland. 

 Vernacular Names — " Needle or Pin-bush." 

 Locality whence this particular specimen was obtained — 



' Ivanhoe, via Hay. 

 Part of the Tree Examined —Bark. 

 Particulars of the trees whence it was obtained — Height 15 



to 20 feet, diameter 8 to 10 inches. 

 Collected 4th September, 1886. Analysed 19th August 



to 4th October, 1887. 



Prevailing colour of bark dark grey. Fissured to a moderate 

 •depth. Distance between the ridges |- inch to 1 inch. Full of 

 fibre through its total thickness. The individual fibres have a 

 very regular wavy appearance, and when stripped in layers have 





