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



Extract. — Yields 15-39 to water at 100° C. Solution of a pale 

 orange-brown colour, slightly aromatic through the presence in it 

 of a trace of essential oil. Colour of moist residue pale dirty 

 brown. 



Kino-tannic acid — 5*25 per cent. It yielded 4*6 per cent, to 

 Mueller and Hoffmann. 



43. * Eucalyptus corymbosa, Smith, N.O. Myrtacese, B. FL iii., 

 256. Figure Decade 5, " Eucalyptographia," (Mueller). 

 Found from New South Wales to Northern Australia. 

 Vernacular Name — " Blood wood." 

 Locality whence this particular specimen was obtained — 



Cambewarra. 

 Geological Formation — Sandstone. 

 Part of the Tree Examined — Bark. 

 Particulars of the trees whence it was obtained — Height 80 



to 100 feet, diameter 3 to 4 feet. 

 Collected 28th August, 1886. Analysed 19th August to 1st 



September, 1887. 



A crumbling deeply fissured bark, prevailing colour ash grey 

 where undisturbed, but as the bark is so friable this weathered 

 appearance is removed on the slightest handling, exposing a red- 

 brown colour. Besides being crumbly, the bark peels off in large 

 flakes, averaging J inch thick. The inner bark lighter, and full of 

 short fibre. Total thickness of bark averages 1 inch. Powder of 

 a very light reddish-brown, and very homogeneous. 



Extract. — Yields 12*16 per cent, to water at 100° C. Colour 

 of solution light reddish-brown, of moist residue, brown. 



Kino-tannic acid — 5*85 percent. In the " Eucalyptographia " 

 Baron Mueller records 2-7 per cent, as the percentage of tannic 

 acid in a specimen of this bark. 



44 and 45. Eucalyptus maculata, Hook., N.O. Myrtacea?, B. 



Fl. iii., 258. Figure Dec. 3, " Eucalyptographia,"(Mueller) 



Found from Port Jackson northwards to Central Queensland. 



Vernacular Name — " Spotted Cum." 



Locality whence this particular specimen was obtained— 



Cambewarra. 

 Geologi cal Formation — Sandstone. 

 Part of the Tree Examined — Bark and Kino. 



* See page 41 for analysis of the kino of this tree. 





