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



98. Hakea saligna, R. Br., N.O. Proteacese, B. FL, v., 512. 



Found in New South Wales and Queensland. 



Sample obtained from The Valley, near Springwood. Height 

 of the tree, 30 feet; diameter, 7 inches. Collected 31st March, 

 1888. Analysed 20th to 22nd August, 1888. 



A tolerably smooth bark, with a few small rounded excrescences 

 and many lichens outside. Colour grey. The inner surface has 

 the characteristic lenticular appearance of Proteaceous barks. A 

 clean-looking, solid bark of comparatively light colour throughout. 

 Thickness ■£-$ inch. Loses moisture to the extent of 47*4 per cent, 

 on the water bath. Colour of dry powder, warm light brown. 



Extract — 36 -96 per cent. Colour, light ruby, with perhaps a 

 shade of orange ; of moist residue, ochrey-brown. 



Tannic acid — 20*42 per cent. Non-tannin and impurities — 

 1-32 per cent. 



99. Casuarina suberosa, Otto et Dietr., N.O. Casuarinese, B. FL, 

 vi., 197. 



Found in Tasmania, Victoria to Queensland. 



Sample obtained from Bangley Creek, Cambewarra. " Forest 

 Oak." Height of tree, 15 to 20 feet; diameter, 8 inches. 

 Collected 19th April, 1888. Analysed 21st to 23rd August, 1888. 



A rugged looking bark, with hard corky layers. Total thickness 

 1 inch. Inner bark reddish-brown, and displaying the lenticular 

 appearance on its inner surface characteristic of the genus. Colour 

 of powder, ochrey-brown. 



Extract — 24*6 percent. Colour rich orange-brown; of moist 

 residue, Vandyke brown. 



Tannic acid — 13*511 per cent. Non-tannin and impurities — 

 1*32 per cent. 



100. Casuarina torulosa, Ait., N.O. Casuarinese, B. FL, vi., 200. 

 Found in New South Wales and Queensland. 



Sample obtained from The Valley, near Springwood. "Drooping 

 She-Oak." Height of tree, 30 feet ; diameter, 15 inches. Collected 

 13th April, 1888. Analysed 23rd to 25th August, 1888. 



The appearance of this bark is characteristic. The furrowing 

 is deep, and is divided transversely. In flaky barks the flakes 

 are of course attached by their flat sides to the tree, but in this 

 instance, each flake (roughly about an inch by one and a half inch 

 and a quarter of an inch thick) is set on end with great regularity, 

 and each may be detached without removing its neighbour. Each 

 flake is corky. Inner bark very coarsely lenticular. Average 

 thickness of inner bark \ inch, of outer bark (flakes) 1 inch. 

 Colour of dry powder ochrey-brown. 



