FIRE-FLIES.

The Day, disrobing for her rest,

Delayed to lift the twilight bars;

And o’er them, from the golden West,

Wandered this troop of truant stars.

—Cora A. Matson Dolson, in Lippincott’s Magazine.

[Illustration: SUGAR CANE.

(Saccharum officinarum.)

FROM KŒHLER’S MEDICINAL-PFLANZEN.]

Description of plate: A, plant much reduced; B, stem portion with

leaf; C, inflorescence; 1-6, parts of flower.

SUGAR-CANE.

(_Saccharum officinarum_ Lin.)

Has God then given its sweetness to the cane,

Unless His laws be trampled on—in vain?

—Cowper: Charity, 190.

This highly important plant belongs to the grass family. It is

perennial, with thick, succulent, jointed rhizomes, having root tufts at

the joints. The stems are numerous, erect, cylindrical, growing to a

height of six to twelve feet. Like the rhizome, the stem is jointed, the

internodes being, however, much shorter toward the base. The leaves are

numerous toward the apex, being deciduous toward the base. The apical

tuftlike inflorescence is quite characteristic. The individual flowers

are small and unattractive in appearance. One of the remarkable things

about the plant is that the fruit never matures. It must be remembered

that the plant referred to is entirely distinct from the so-called

sugar-cane of the Central States from which sorghum molasses is made.

It is very doubtful whether sugar-cane occurs anywhere in the wild

state, at present. Authorities are quite unanimous in expressing it as

their opinion that its original home was India. It is a plant that has

been under cultivation for many centuries. Alexander the Great, in his

invasions of India, found that the inhabitants of that country

cultivated and used it extensively as a food article. Theophrastus

mentions a “sweet salt” (sugar) which he obtained by evaporating the

juice of an Indian reedlike plant, which was perhaps sugar-cane, though

there is no conclusive evidence that the earlier Greeks and Romans were

familiar with sugar; they employed honey quite universally. The “sweet

cane” of Scripture is probably Andropogon calamus aromaticus, or sweet

calamus, which was a native of India. It is presumed by some that the

cane grown in China was originally native there. The cultivation of

sugar-cane seems to have spread very rapidly. It early found its way to

Persia and Arabia, and then from Arabia as a center has spread to the

Mediterranean districts, Sicily, Cyprus, Spain and Italy. It found its

way to Santo Domingo as early as 1494 and to Brazil early in the

sixteenth century. At the present time cane is grown in nearly all

tropical and sub-tropical countries, the Southern United States

producing more than any other country.

There are many varieties recognized by cultivators, differing in color,

texture and other minor characteristics.

Since cane does not ripen fruit, it is propagated by transplanting the

rhizomes and top portions of stem, and after a field is once planted new

crops are permitted to spring up from the old rhizomes, and this

accounts for the awful tangle of the famous Southern canebrakes, which

figured so extensively in the slave days, when these fields served as

hiding places for the fugitive slaves. The ripe cane is cut close to the

ground, the leaves stripped off and the tassel cut off. It is then

carted to the cane mill and passed between large rollers, which express

the juice, which is then clarified by means of lime, animal charcoal and

blood. Heat further aids the purifying process by coagulating the

albuminous matter, which, mixed with other impurities, rises to the

surface as a scum and is removed by means of a special ladle. The lime

combines with the free acid present and settles to the bottom. The juice

is boiled until it acquires a proper tenacity, when it is passed into a

cooler and allowed to crystallize. This sugar is then placed in large

perforated casks and allowed to drain for two or three weeks, when it is

packed into hogsheads and exported under the name of raw sugar or

muscovado sugar. The drainings form molasses. Raw sugar is taken to the

sugar refinery and purified by heating with water and bullocks’ blood,

filtered through canvas bags and finally allowed to percolate very

slowly through large cylinders containing freshly prepared,

coarse-grained animal charcoal. The filtered liquor is then boiled by

the aid of steam. When sufficiently tenacious it is poured into conical

molds, and when solidified the stoppers are removed to allow the treacle

to drain off. The loaves from the molds are then sugared, as it is

called, by pouring over them a saturated sugar solution, which, by

slowly percolating through them, carries with it coloring matter and

other impurities without dissolving the sugar crystals. When a saturated

aqueous solution of sugar is allowed to cool slowly it forms large,

beautiful crystals known as sugar or rock candy. Caramel is burnt sugar;

it has a peculiar odor and loses its sweet taste, becoming bitter. It is

used largely as a coloring agent for coloring liquids.

Sugar has innumerable uses. As an article of food it is not surpassed,

though it cannot support life alone, because it contains no nitrogen. It

is the important ingredient in candies, pastries, sweetened drinks, etc.

Molasses and treacle are much used and must not be confounded with the

sorghum molasses made from the sugarcane of the Central States. Molasses

and treacle sometimes have a peculiar and to many a very objectionable

flavor, due to impurities present.

Molasses, as well as treacle, when fermented, gives rise to rum. The

popular notion that sugar is injurious to teeth is without foundation.

It has no action on teeth whatever. If anything it has anti-septic

properties and preserves the teeth. It is, however, undoubtedly true

that the excessive consumption of sweets, pastries in particular, is bad

for the digestion, as externally manifested by a dirty complexion and

skin eruptions. As a whole sugar by itself is not injurious; it is an

excellent food, a heat producer and easily assimilated. Americans,

especially the American youth, are the great sugar consumers of the

world.

In medicine sugar is employed to disguise the taste of disagreeable

remedies and to coat pills. It has no direct curative properties in

disease.

Albert Schneider.

Birds and Nature Vol. 11 No. 2 [February 1902] Illustrated by Color Photography · 第 18 / 20 题