ight probably be turned to
account in the arts of civilization. The order of plants to which it
belongs, contains a vast number of species, all natives of tropical
regions, and their value for the production of coloring substances may
be worth investigation.

It is met with in British Guiana, and the Indian tribes of that
district prepare the pigment with which they stain their skin from it;
it is called by them "Caraveru." The coloring matter is used as a dye
in the United States, and for artistical purposes would rival madder.
Sir Robert Schomburgk thinks it might form an article of export if it
were sufficiently known, as its preparation is extremely simple. The
leaves are dried in the sun, and at the first exposure, after having
been plucked from the vine which produces them, they show the abundant
feculent substance which they contain.

LANA DYE.--A beautiful bluish-black color, known as "Caruto," is
procured in Demerara and Berbice from the juice of the fruit of the
_Genipa Americana_, Linn.--a tree very common in the colony. The
Indians use it for staining their faces and persons. The Lana dye was
honorably mentioned by the jurors at the Great Exhibition in 1851. The
bluish-black color obtained from it is remarkably permanent, a fact
which has very long been known, though hardly any attempt appears to
have been made to introduce it to the notice of European dyers.
Another pigment is prepared by them from arnotto, mixed with turtle
oil, or carap oil, obtained from the seeds of the _Carapa guianensis_
(Aubl.). The wild plantain (_Urania guianensis_) and the cultivated
plantain (_Musa paridisiaca_), the Mahoe (_Thespesia populnea_), and
the pear seed of the Avocado (_Persea gratissima_), furnish dyes in
various parts of the West Indies; specimens of many of these have been
imported from British Guiana and Trinidad.

Russia produces good specimens of the wood of _Statice coriaria_, the
leaves and bark of sumach, the bark of the wild pomegranate, yellow
berries, _Madia sativa_, saffron, safflower and madder roots for
dyeing purposes.

_Avicenna tomentosa_, a species of mangrove, is very common about the
creeks of Antigua, Jamaica, and other West India islands, where it is
used for dyeing and tanning.

In New Zealand, the natives produce a most brilliant blue-black dye
from the bark of the Eno, which is in great abundance. Some of the
borders of the native mats, of a most magnificent black, are dyed with
this su