ught into
contact with various substances. Gluten gives it a blue tint:
nitric acid and chlorin change it successively to green, blue, and
brown. The resin is used medicinally as also are the bark and
wood.

225. GUAZUMA TOMENTOSA.--This plant is nearly allied to the
chocolate-nut tree, and yields fruits that abound in mucilage, as
also does the bark of the young shoots. The mucilage is given out
in water, and has been used as a substitute for gelatin or albumen
in clarifying cane juice in the manufacture of sugar. The timber
is light, and is employed for the staves of sugar hogsheads; it is
known in Jamaica as bastard cedar. A strong fiber is obtained from
the young shoots.

226. GUILIELMA SPECIOSA.--The peach palm of Venezuela. The fruits are
borne in large drooping bunches, and their fleshy outer portion
contains starchy matter, which forms a portion of the food of the
natives. They are cooked and eaten with salt, and are said to
resemble a potato in flavor. A beverage is prepared by fermenting
them in water, and the meal obtained from them is made into bread.
The wood of the old trees is black, and so hard as to turn the
edge of an ax.

227. HAEMATOXYLON CAMPECHIANUM.--The logwood tree. This dyestuff is
largely used by calico printers and other dyeing manufacturers. It
is also used as an ingredient in some writing inks. The heart wood
is the part used for dyeing. This is cut into chips which yield
their color to water and alcohol. The colors are various according
to treatment, giving violet, yellow, purple, and blue, but the
consumption of logwood is for black colors, which are obtained by
alum and iron bases.

228. HARDENBERGIA MONOPHYLLA.--An Australian climbing plant of the
leguminous family. The long, carrot-shaped, woody root was called,
by the early settlers in that country, sarsaparilla, and is still
used in infusion as a substitute for that root.

229. HARTIGHSEA SPECTABILIS.--A New Zealand tree, called Wahahe by the
natives, who employ the leaves as a substitute for hops, and also
prepare from them a spirituous infusion as a stomachic medicine.

230. HELICONIA BIHAI.--A plant of the order _Musaceae_, from South
America. The young shoots are eaten by the natives, and the fruits
are also collected and used a