GUMS, RESINS, AND KINOS. 225 
5. Bertya Cunninghamii, Planch., N.O., Euphorbiacez, B.FI., 
Vi., 75- 
The branchlets of this plant exude a clear gum-resin so 
abundantly as to give dried specimens, when held up to the light, 
a pretty hyaline appearance. The substance is of a yellowish 
colour, and no doubt would prove exceedingly interesting if 
examined, but theauthor has, up to the present, been unsuccessful in 
obtaining a quantity of it. It has a pleasant, bitter taste, some- 
thing like wormwood. 
Many of our Euphorbiaceous plants yield resin in greater or 
less quantity, and will provide useful material for future 
experiment. 
Victoria and. New South Wales. 
6. Beyeria viscosa, 27. (For synonyms, see ‘“ Timbers,”) 
N.O., Euphorbiacez, B.FI., vi., 61. 
The “ Pink Wood” of Tasmania. Called also ‘‘ Wallaby Bush.” 
A resinous substance exudes from the leaves, sometimes so 
abundantly that characters can be traced in it by means of a style. 
All the colonies. 
7. Ficus macrophylla, Desf., N.O., Urticez, B.FI., vi., 170. 
“Moreton Bay Fig,” ‘‘ Karreuaira,” or ‘‘ Waabie,” of the aboriginals. 
The milky sap (latex) of this tree yields a very fair caoutchouc. 
Other species of /%cus yield juices more or less similar. 
Northern New South Wales and Queensland. 
8. Ficus rubiginosa, Desf, (Syn. F. australis, Willd. ; Urostigma 
rubiginosum, Gaspar.); N.O., Urticez, B.FI., vi., 168. 
“Port Jackson Fig,’ ‘‘ Narrow-leaved Fig,” ‘‘ Native Banyan,” 
“ Dthaaman”’ of the aboriginals. 
This fig, like other figs, exudes a juice when the bark is 
wounded. At present, it is put to no useful purpose. It has 
formed the subject of the following chemical investigation :— 
“The resinous exudation of this tree resembles Euphorbium 
in appearance, varies in colour from dirty yellow or red to almost 
white, solid, generally brittle, but tough in the interior of large 
pieces, opaque, with dull and wax-like fracture ; at 30° C it softens 
Q 
