GUMS, RESINS, AND KINOS. 229 
treated with absolute alcohol gives a copious precipitate of gum 
proper. When the alcoholic solution is evaporated, it gives 5.6 
per cent. of a reddish, transparent resin. The gum proper is grey, 
and does not ‘appear to give a true solution in water. The gum 
already soaked in water dissolves immediately if a little potash, 
lime, or potassium-carbonate be added, and the solution gelatinises 
under the influence of a ferric salt. This reaction is said to dis- 
tinguish this product from all other known gums. The gum is 
levorotatory, and has no action on Fehling’s solution. 
New South Wales and Queensland. 
13. Grevillea striata, #.2r., (Syn. G. lineata, R.Br.); N.O., 
Proteacex, B.FI., v., 462. 
“Beefwood.” (For other names, see ‘ Timbers.”) 
A resin from this tree has just been sent to the Technological 
Museum from Whittabranah, in the far-west of New South Wales. 
It is quite free from odour, and has a dark, reddish-brown colour. 
When pure, it has a bright fracture, but much of it is admixed 
with woody matter ina fine state of division. The warmth of 
the hand is sufficient to cause the resin to adhere to it. It sticks to 
the teeth, but is without taste. It is reduced to powder with the 
utmost facility, forming a dull powder. It is opaque-looking, and 
in appearance is most like 2. maculata kino of any substance with 
which the author is acquainted. It appears to be of rare occurrence, 
but was abundant on two particular trees. It was so hard on 
them that a hammer and chisel was necessary to remove it. It 
appears to be a true resin, and if so, will be the first recorded, so 
far as he is aware, from any Proteaceous plant. 
South Australia, New South Wales to Northern Australia. 
14. Myoporum platycarpum, 2.2r., (Syn. Disoon platycarpus, 
F.v.M.); N.O., Myoporine, B.FI., v., 7. 
“Sandalwood.” ‘“ Dogwood.” ‘Sugar Tree.” 
The resin from this tree is used by the aboriginals as a sub- 
stitute for pitch and wax; e.g., they cement the stone heads of 
their tomahawks to the fibre which joins them to the stick forming 
