DYES. 
AusTRALIA certainly does not appear to be a land which can 
boast of its native vegetable dyes. But it is only fair to observe 
that practically nothing has been done in the way of experiments 
with our raw dye-stuffs. Almost the only technological experi- 
ments with any of them are by Baron Mueller and Mr. Rummel 
(CIntercolonial Exhibition of Melbourne, 1866), and which are 
referred to below, while Professor Rennie has investigated the 
pigment contained in the tubers of a species of Drosera, interest- 
ing, however, only from a scientific point of view. 
1. Acacia harpophylla, F.v.M.; N.O., Leguminose, B.FI. ii., 
389. 
£ Brigalow.” 
Baron Mueller exhibited at the Intercolonial Exhibition of 
Melbourne, 1866, cotton and woollen fabrics dyed with the bark 
of this tree. Various tints of reddish-brown were obtained. 
South Queensland. 
z. Acacia subcceruléa, Zind/., (Syn., A. Aemiteles, Benth.; A. 
apiculata, Meissn.); N.O., Leguminosz, B.FI. ii., 369. 
“ Silvery,” or ‘‘ Blue-leaved Acacia.” 
From the bark a very good yellow dye has been produced. 
(Bennett.) 
Western Australia. 
3. Alstonia constricta, 7.v.JZ, N.O., Apocynezx, B.FI., iv., 314. 
“Fever Bark.” 
Baron Mueller exhibited at the Intercolonial Exhibition of 
Melbourne, 1866, cotton and woollen fabrics dyed with the bark 
of this tree from Queensland. Various shades of yellow were 
obtained. 
New South Wales and Queensland. 
