The Commercial Products of the Vegetable Kingdom / Considered in Their Various Uses to Man and in Their Relation to the Arts and Manufactures; Forming a Practical Treatise & Handbook of Reference for the Colonist, Manufacturer, Merchant, and Consumer, on the Cultivation, Preparation for Shipment, and Commercial Value, &c. of the Various Substances Obtained From Trees and Plants, Entering into the Husbandry of Tropical and Sub-tropical Regions, &c.

by P. L. Simmonds

The tacca plant grows at Zanzibar, and is found naturalised on the high islands of the Pacific. The art of preparing arrowroot from it is aboriginal with the Polynesians and Feejeeans.

At Tahiti the fecula is procured by washing the tubers, scraping off their outer skin, and then reducing them to a pulp by friction, on a kind of rasp, made by winding coarse twine (formed of the coco-nut fibre) regularly round a board. The pulp is washed with sea water through a sieve, made of the fibrous web which protects the young frond of the coco-nut palm. The strained liquor is received in a wooden trough, in which the fecula is deposited; and the supernatant liquor being poured off, the sediment is formed into balls, which are dried in the sun for twelve or twenty-four hours, then broken and reduced to powder, which is spread out in the sun further to dry. In some parts of the world cakes of a large size are made of the meal, which form an article of diet in China, Cochin-Caina, Travancore, &c., where they are eaten by the natives with some acid to subdue their acrimony.

Some twenty varieties of the Ti plant (Diacaena terminalis) are cultivated in the Polynesian islands. There is, however, but one which is considered farinaceous and edible. In Java the root is considered a valuable medicine in dysentery.

Within the last three or four years, considerable quantities of a feculent substance, called Tous les mois, have been imported from the West Indies. It is cultivated in Barbados, St. Kitts, and the French islands, and is said to be prepared by a tedious and troublesome process from the rhizomes of various species of Canna Coccinea, Achiras, glauca, and edulis. It approaches more nearly to potato starch than to any other fecula, but its particles are larger. Like the other amylaceous substances, it forms a valuable and nutritious article of food for the invalid.

The large tuberous roots of the Canna are equal in size to the human head. The plant attains in rich soils a stature of fourteen feet, and is identical, it is supposed, with the Achira of Choco, which has an esculent root highly esteemed; and my friend, Dr. Hamilton, of Plymouth, has named it provisionally, in consequence, Canna achira. The starch of this root, he asserts, is superior to that of the Maranta.

ROOT CROPS.

Amongst tuberous rooted plants, which serve as food for man in various quarters of the globe, the principal are the common potato, yam, cocoes or eddoes, sweet potatoes, taro, tacca, arrowroot, cassava, or manioc, and the Apios (Arracacha esculenta). There are others of less importance, which may be incidentally mentioned. The roots of Tropæolum tuberosum are eaten in Peru, those of Ocymum tuberosum in Java. In Kamschatka they use the root of the Lilium Pomponium as a substitute for the potato. In Brazil the Helianthus tuberosus. The rhizomæ and seed vessels of the Lotus form the principal food of the aborigines of Australia. As a matter of curious information, I have also briefly alluded to many other plants and roots, furnishing farinaceous substance and support in different countries.

The comparative amount of human food that can be produced upon an acre from different crops, is worthy of great consideration. One hundred bushels of Indian corn per acre is not an uncommon crop. One peck per week will not only sustain life, but give a man strength to labor, if the stomach is properly toned to the amount of food. This, then, would feed one man 400 weeks, or almost eight years! 400 bushels of potatoes can also be raised upon an acre. This would give a bushel a week for the same length of time; and the actual weight of an acre of sweet potatoes (Convolvulus batatas) is 21,344 lbs., which is not considered an extraordinary crop. This would feed a man (six pounds a day) for 3,557 days, or nine and two-third years!

To vary the diet we will occasionally give rice, which has been grown at the rate of 93 bushels to the acre, over an entire field. This, at 45 lbs. to the bushel, would be 4,185 lbs.; or, at 28 lbs. to the bushel when husked, 2,604 lbs., which, at two pounds a day, would feed a man 1,302 days, or more than three-and-a-half years!

POTATOES.