274 ON SOME N.8.W. TAN-SUBSTANCES. 



93. Ceratopetalum apetalum, D. Don., N. 0. Saxifrageae, 

 B. Fl., ii., 442. 



Found in New South Wales. 



Sample obtained from Fitzgerald's Creek, near Springwood. 

 " Coach- wood." Height of tree, 80 feet ; diameter, 15 inches. 

 Collected 1st April, 1888. Analysed 20th to 22nd August, 1888. 



Taken from a recently fallen tree which lay across the creek, 

 forming a natural bridge. The bark was exceedingly difficult to 

 remove, as it did not peel in the slightest degree, and was, 

 moreover, very tough. It is powerfully fragrant, containing 

 abundance of coumarin. Very light grey on the outside, and 

 nearly smooth. Inside it is of a uniform rich reddish-brown 

 colour, and very hard and solid, harder even than the soft woods. 

 Average thickness, \ inch. Colour of dry powder, hardly red 

 enough for Sienna brown. 



Extract — 34-14 per cent. Colour, light ruby, with perhaps a 

 shade of orange ; of moist residue, bright reddish-brown inclining 

 to orange-brown. 



Tannic acid — 20*52 per cent. Non-tannin and impurities — 

 1*524 per cent. 



94. Ceratopetalum apetalum, D. Don. See No. 93. 



Sample obtained from Bangley Creek, Cambewarra. Height 

 of tree, 60 to 80 feet ; diameter, 1 to 3 feet. Collected 15th June, 

 1888. Analysed 4th to 6th September, 1888. Nos. 93 and 94 

 are identical in appearance. Colour of dry powder pure brown. 



Extract — 26 -86 per cent. Colour, dark ruby ; of moist residue 

 burnt umber. 



Tannic acid — 13*917 per cent. Non-tannin and impurities — 

 1*321 per cent. 



95. Backhousia myrtifolia, Hook et Harv. y N.O. Myrtacese, B. 



Fl., iii., 269. 



Found in New South Wales and Queensland. 



Sample obtained from Fitzgerald's Creek, near Springwood. 

 " Water Myrtle." Height of tree, 40 feet ; diameter, 9 inches. 

 Collected 30th March, 1888. Analysed 21st to 23rd August, 1888. 



These trees are moss-grown, and the bark is a favourite place 

 for orchids. Prevailing colour of outside greyish-drab, and light 

 coloured throughout its substance. Outside slightly rugged and 

 somewhat scaly. A compact bark, and will carry well. Average 

 thickness J inch. Colour of dry powder, drab. The fresh bark 

 lost 36*9 per cent, in drying on water-bath. 



Extract — 31*44 per cent. Colour, orange-brown; of moist 

 residue, light dirty brown. 



Tannic acid — 15*949 per cent. Non-tannin and impurities — 

 1*32 per cent. 



