1284 ON KINGS AS AN AID IN THE DIAGNOSIS OF EUCALYPTS, 



With alcohol (so as to form a tincture of B.P. tinct. Kino 

 strength), the supernatant liquid is of a reddish-brown colour, and 

 the granular residue is of a reddish-brown colour likewise. 



Eucalyptus robusta, Smith, B.Fl. iii. 228. 

 Found in N. S. Wales and Queensland. 



Note, — Smith, in describing this species in his Speciinen of the 

 Botany of New South Wales, 1793, styled it the " Brown Gum- 

 tree " or "New Holland Mahogany." The first name was given 

 because " its resin is an inferior sort of red gum, of a brown hue." 

 Smith's Kino was brownish because it was old, and I draw 

 attention to the name " Brown Gum," which is sometimes quoted 

 in connection with this species, in order to point out that it is 

 never employed in Australia, and was simply Smith's appellation. 



No. 29. " Swamp Mahogany." Belong Swamp, Nowra, August 

 1888. Diam., 1-5 ft. ; height, 60-100 ft. A poor sample. In 

 tears with adherent fibrous bark. The tears are quite bright, and 

 therefore freshly exuded, presumably. It is of a more than 

 ordinarily rich deep ruby colour. 



Cold water yields a solution of a medium orange-brown colour, 

 and leaves a reddish-brown residue. With alcohol (tinct. B.P. 

 strength), the liquid is but slightly coloured ; the granular gummy 

 residue is rendered opaque-looking, and of tints from flesh colour 

 (gum), to Vandyke brown (phlobaphenes). 



Eucalyptus saligna. Smith, B.Fl. iii. 245. 

 Found in N. S. Wales and Queensland. 



No. 30. " Blue Gum." Eastwood, near Sydney, 28th April, 

 1888. Height, 80 ft. ; diam., 3 ft. 



A dullish-looking Kino, of all tints of garnet. It is of a horny 

 texture for the most part. In bulk it perhaps most generally 

 resembles E. 2)unctata Kino in appearance, but it has none of the 

 brown tint of the latter. 



