318 AUSTRALIAN NATIVE PLANTS. 
5.107 per cent. of tannic acid, and 19.11 per cent. of extract. 
(Proc. R.S., N.S.W., 1887, p. 199.) 
In all the colonies except Tasmania. 
45. Eremophila oppositifolia, *. Br., (Syn. £. arborescens, 
A. Cunn.; Z£. Cunninghamit, R.Br.; Hremodendron Cun- 
ninghamit, A. DC.); N.O., Myoporine, B.FI., v., 20. 
“Emu Bush.” 
The bruised leaves of this plant are used by the aboriginals 
in the Western District for tanning wallaby and other skins used 
by them for carrying water. Probably other species of Zremophila 
are used for the same purpose. 
South Australia, Victoria and New South Wales. 
46. Eucalyptus spp, 
Not only the bark, but also the leaves of HLucalyp/z contain a 
peculiar variety of tannin, different in its action on the salts of iron, 
compared with the tannic acid of Acacias and other plants, but 
yet valuable as an adjunct to other tanning materials. Our experi- 
ments showed that about four weeks were required to effect the 
tanning of cow-hides, by simple immersion in the tan-liquor as 
obtained by decoction, without addition of other substances, 
whether leaves or bark were employed, except in the case of £. 
Gunnit, the tanning process with that species being completed in 
two weeks, and with Z£. goncocalyx in three weeks. The leather 
obtained from leaves of &. Leucoxylon was grey-brown, hard and 
tough ; that from the bark of 4. Gunnii light-brown, and rather 
flexible; that from bark of Z. viminalis, £. gonitocalyx, and £. 
amygdalina, reddish-brown and tough; that from the bark of 
£. macrorrhyncha and E. melliodora darker still than that of the 
preceding three; that from the bark of £. odligua red-brown in 
colour. (Mueller, Lucalyptographia.) 
47. Eucalyptus acmenioides, Schauer, (Syn. Zs pilularis var. (?) 
acmentotdes, Benth.; £. ¢rianthos, Link) ; N.O., Myrtacez, 
B.F1, iii., 208. 
