ford a lac for dyeing and
painting. Dried pomegranates are said to be used in Tunis for dyeing
yellow; the rind is also a tanning substance.

Sir John Franklin tells us that the Crees extract some beautiful
colors from several of their native vegetables. They dye a beautiful
scarlet with the roots of two species of bed-straw, _Galium
tinctorium_ and _boreale_. They dye black, with an ink made of elder
bark and a little bog-iron ore dried and powdered, and they have
various modes of producing yellow. They employ the dried roots of the
cowbane (_Cicuta virosa_), the bruised buds of the Dutch myrtle, and
have discovered methods of dyeing with various lichens.

In the "Comptes Rendus," xxxv., p. 558, there is an account by M.J.
Persoz, of a green coloring matter from China, of great stability,
from which it appears that the Chinese possess a coloring substance
having the appearance of indigo, which communicates a beautiful and
permanent sea green color to mordants of alumina and iron, and which
is not a preparation of indigo, or any derivative of this dyeing
principal. As furnished to M. Persoz by Mr. Forbes, the American
consul at Canton, it was in thin plates of a blue color, resembling
Japanese indigo, but of a finer grain, differing also from indigo in
its composition and chemical properties. On infusing a very small
quantity of it in water, this fluid soon acquired a deep blue color
with a greenish tinge; upon boiling and immersing a piece of calico on
which the mordants of iron and alumina had been printed, it was dyed a
sea green color of greater or less intensity according to the strength
of the mordant--the portions not coated remaining white.

A berry called _Makleua_ grows on a large forest tree at Bankok, which
is used most extensively by the Siamese as a vegetable black dye. It
is merely bruised in water, when a fermentation takes place, and the
article to be dyed is steeped in the liquid and then spread out in the
sun to dry. The berry, when fresh, is of a fine green color, but after
being gathered for two or three days it becomes quite black and
shrivelled like pepper. It must be used fresh, and whilst its mixture
with water produces fermentation. The bark of _Datisca cannabina_ also
dyes yellow. It contains a bitter principle, like quassia.

A coloring matter is prepared from the dried fruit of the _Rottlera
tinctoria_, by the natives of the East, to dye orange, which is a
brilliant and tolerably permane