ON SOME N.S.W. TAN-SUBSTANCES. 191 



Extract. — Yields 24-91 per cent, to water at 100° C. Solution. 

 of an intense orange-brown colour. Becomes slightly turbid on 

 cooling. Colour of moist residue sienna brown. 



Catechu-tannic acid — 15-34 per cent. 



36. Locality whence this particular specimen was obtained — 

 On the banks of a creek between Ryde and South Ryde 

 Railway Stations, Great Northern Line, to the east of 

 the line. 



Geological Formation — Sandstone. 



Part of the Tree Examined — Bark. 



Particulars of the trees (saplings) whence it was obtained — 

 Height 5 to 10 feet, diameter 1 to U inch. 



Collected 30th July, 1887. Analysed 12th to 29th September 

 1887. 



The saplings were healthy. Two days after stripping the bark 

 was dried on the water-bath with the following result : 



Weight green 34-822 



Weight dry 14 '702 



Loss 20-120 

 .*. loss on drying = 57 '779 per cent. 



In general appearance the bark of these saplings is much lighter 

 than the bark examined at page 90. It is of a grey tint ; also 

 the inner bark is more yellow than that from Oatley's. Thickness 

 up to -rw inch. 



Extract. — Yields 23-53 per cent, to water at 100° C. Colour 

 pale brown ; very turbid whether in the cold or on boiling, owing 

 to the presence of much mucilage. Colour of moist residue sienna 

 brown of a lighter tint than that of the bark from Oatley's. 



Catecliu-tamiic acid — 15-99 per cent. 



Eucalyptus stellulata, Sieber, N.O. Myrtacese, B. Fl.iii., 200 



Figure Dec. 6 " Eucalyptographia" (Mueller). 

 Found in New South Wales and Queensland. 

 Vernacular Name — "Sally or Black Gum." 

 Locality whence this particular specimen was obtained — 



Bombala. 

 Geological Formation — Limestone. 

 Part of Tree Examined — Kino. 

 Particulars of the trees whence it was obtained — Height 30 



to 50 feet, diameter 2 feet. 

 Collected 17th and 18th February, 1887. Analysed 12th to 



21st September, 1887. 



