276 
Mangrove Bark (2hizophora spp.). 
BritisH.—East Africa, Zanzibar, &c. Forrercn.—Mozam- 
bique. Chiefly from Lhizophora mucronata, Lam., a species also 
found on the shores of India, Burma, &c., from whence also the 
bark is probably obtained for tanning in this country. Watt 
(Comm. Prod. India), states that it is exported from Mergui to 
Rangoon, and a considerable trade is also done in it from the 
Perak Coast. 
‘““Gamfort’’ is a trade name for an extract (like ‘‘ Cutch’’), 
made on the coast of Borneo, near Sarawak. There is a sample 
of this in the Kew Museum, and it is believed to be obtained from 
a Mangrove bark, probably that of the species mentioned. 
The best Mangrove bark or extract is not so acceptable to 
tanners as Oak Bark, Valonia, Quebracho, Mimosa Bark, &c.; 
the principal objection is its deep red colour, and it is only con- 
sidered satisfactory for tanning leather when used in combina- 
tion with better class substances. Some particulars of the 
“‘Cutch ”? Industry from Mangrove bark in Borneo are given in 
Journ. Soc. Arts, July 23, 1909, p. 737. See also K.B. 1892, 
p. 227; Add. Ser. ix. Part ii., p. 304. 
Quebracho Colorado (Quebrachia Lorentzii, Griseb.). Wood 
and Extract imported chiefly from the Argentine. Quebrachia 
Morongii, Britton, is known as ‘‘ Quebracho Colorado ”’ in Para- 
guay, where the wood is ground up and used for tanning pur- 
Wattle Bark or Mimosa Bark (several species of Acacia, 
notably A. mollissima, Willd., A. dealbata, Link, A. pycnantha, 
Bth., &.). 
Britisn.—Australia, Natal. 
The cultivation of Wattle bark, which has been very successful 
in Natal (with Acacia mollissima, introduced from Australia), 
has also been undertaken in New Zealand, Hawai, California, 
&c. Information about A. saligna especially will be found in 
K.B. 1893, p. 370. 
Mallet Bark (Eucalyptus occidentalis, Endl., var. astringens). 
Britiso.—West Australia. 
As a tanning substance this is comparatively new, some large 
shipments bate been made, beginning about 1904, and the bark 
is regarded as a strong competitor of the more widely used 
Mimosa or Wattle Bark. See also A.B. 1911, p. 114. 
Cutch or Catechu (Acacia Catechu, Willd.). 
Britiso.—India, Burma, &e. us 
The extract for tanning purposes is obtained by boiling the 
chips of the heart-wood of the tree. It is known in commerce as 
“Dark Catechu,’? ‘‘ Black Catechu,’’ ‘‘ Pegu Catechu,’’ or 
“Terra Japonica.’’ The last name is also applied to the extract 
of Uncaria Gambier, Roxb. See also K.B. 1894, p. 323. 
