ON SOME N.S.W. TAN-SUBSTANCES. 203 



the appearance of net-work. It has the usual Proteaceous 

 appearance on the inner surface of the bark, which is of a light 

 -colour. Total thickness averages | inch. Colour of powder 

 reddish-brown, with abundance of light coloured fibre. 



Extract. — Yields 14 -95 per cent, to water at 100° C. Colour 

 ■of solution light reddish-brown ; of moist residue, like that of 

 Grevillea striata, but less red. 



Tannic acid, 10 -9 9 per cent. 



-51. Banksia integrifolia, Linn, f., N.O. Proteacoa?, B. Fl. v., 

 55-1. Figure Curtis' Botanic Magazine, t. 2770. 

 Found in Victoria, New South Wales and Queensland. 

 Vernacular Name — "Coast Honeysuckle." 

 Locality whence this specimen was obtained — 200 yards to 



the north-west of South Ryde Railway Platform, Great 



Northern Railway. 

 Geological Formation — Sandstone. 

 Part of the Tree Examined — Bark. 

 Particulars of the tree whence it was obtained — Height 35 



feet ; diameter 1 foot. 

 Collected 20th July, 1887. Analysed 30th July to 28th 



September, 1887. 



A fissured bark. Colour light grey to dark grey and even 

 nearly black. It reminds one strongly of the bark of the Cork 

 'Oak, except in thickness, which averages J inch. Inner bark of 

 pale colour, and having a surface which may be compared to that 

 of a rasp, with the exception that the teeth, which are set witii 

 exceeding regularity, are longitudinal, and not transverse. Each 

 tooth is lenticular, dentate on its upper surface, about a line long, 

 and separated from its neighbour by a distance equal to its own 

 greatest thickness, i.e., about - 3 -V of an inch. Colour of powder 

 light-brown, with little or none of the reddish tint of B. serrata. 



This bark, preserved as much as possible from drying in the 

 meantime, was put in the water-bath two days after collection. 

 Following is the result : — 



Weight green ... ... 43-606 grms. 



Weight dry 20-805 



Loss 22-801 

 = 52 - 3 per cent, of moisture. 

 Extract. — Yields 14-2 per cent, to water at 100° C. Colour of 

 .solution deep orange-brown ; of moist residue pure brown. 

 Tannic acid, 10 - 825 per cent. 



