The Commercial Products of the Vegetable Kingdom Part 46

Whether Linnaeus be right in his conjecture (Spec. Plant, 1763) that the "Bihai" (_Heliconia humilis_), a native of Caraccas, which produces fertile seeds, is the stock plant of the plantain, it is almost impossible to ascertain; but the absence of any description of a wild seed-bearing plantain, renders it highly probable that the cultivated species are hybrids produced long ago. The banana, from time immemorial, has been the food of the philosophers and sages of the East, and almost all travellers throughout the tropics have described these plants exactly as they are known to us, either as sweet fruit eaten raw, or a farinaceous vegetable roasted or boiled.

It is remarkable that the plantain and banana should be indigenous, or at all events cultivated for ages both in the Old and New World.

Numerous South American travellers describe some one of these plants as being indigenous articles of food among the natives, thus showing (if the plantain and its varieties be hybrids) a communication between the tropics of America, Asia and Africa, long before the time of Columbus. The older writers on the colony of Guiana, as Hartsinck, Bellin and others, consider the plantain to be a native. It is remarkable that Sir R. Schomburgk, during his travels, found a large species of edible plantain far in the interior. It appears, therefore, from all the investigations that have been made, that the plantain is either a hybrid, or its power of production from seed has been destroyed long ago by cultivation, and that it is not known to exist anywhere in a perfect state; in which case any attempt to improve the present stock by the introduction of suckers from elsewhere, must be totally futile. Mr. A. Garnett recommends the following system of cultivation, as calculated to prevent the blight. The walk or plantation is to be formed into beds 36 feet wide, divided by open drains 30 inches deep. Two rows of plantains to be planted upon each bed at 18 feet distance, both between and along the rows, to afford a clear ventilation to the enlarging plants, and so soon as the plantation has been established, the s.p.a.ce of land between each row to be shovel-ploughed 12 inches deep; the same to be repeated annually, and upon the inters.p.a.ce may be planted maize, yams, sugar cane, or eddoes, and the whole kept clear at all times. Thus, with the conjoined principles of good tillage, free ventilation, and mixed crops, the blight may yet be successfully combated.

A great diminution in the cultivation of the plantain has been occasioned in British Guiana by this blight or disease, which first made its destructive appearance in Essequibo, upwards of thirty years ago, where its ravages increased with such fatal intensity as to render the profitable growth of the plant almost hopeless; and up to this hour no one has been able to discover the immediate or remote cause of this extraordinary vegetable endemic; whether arising from the action of insects among the sheathes of the petioles of the leaves, or in the soil, or from organic decay of the plant, remains without solution. The last-named cause seems to be rejected, by the fact that the fructification of the plant is as healthy and abundant in parts of the colony where the blight does not prevail, both in number and size of the fruit upon the spike, as at any former period.

On the east coast of Demerara, both the plantain and banana have been grown for more than twenty years upon the same land, without any attack of the disease, and without any extraneous manure or even lime having been applied, and the plants still exhibit great luxuriance, and produce their former weight of fruit.

The foliage of the plantain affords food and bedding, and is used for thatch, making paper, and basket making; and from its petioles is obtained a fine and durable thread. The tops of the young plants are eaten as a delicate vegetable; the fermented juice of the trunk produces an agreeable wine.

The abundance and excellence of the nutritive food which the plants of this valuable genus supply are well known; but of the numerous uses to which they are applied I may mention, the following:--

The fruit is served up both raw and stewed; slices fried are also considered a delicacy. Plantains are sometimes boiled and eaten with salt meat, and pounded and made into puddings, and used in various other ways. In their ripe state these fruits contain much starchy matter. From their spurious stems, the fibres of the spiral vessels may be pulled out in such quant.i.ty as to be used for tinder. _M.

textilis_ yields a fibre which is used in India in the manufacture of fine muslins, and the coa.r.s.er woody tissue is exported in large quant.i.ties from Manila, under the name of white rope or Manila hemp.

Horses, cattle, swine, and other domestic animals are fed upon the fruit, leaves, and succulent trunks.

The same extent of ground which in wheat would only maintain two persons, will yield sustenance under the banana to fifty. That eminent naturalist and elegant writer, the Baron Von Humboldt, states ("Political Essay on New Spain," vol. ii.) that an acre of land cultivated with plantains produces nearly twenty times as much food as the like s.p.a.ce sown with corn in Europe. He refers to a place in Venezuela, where the most careful tillage was rendered to a piece of land, yielding produce supporting a humble population residing in huts, each placed in the centre of an enclosure, growing the sugar cane, Indian corn, the Papaw tree, and the Musa--a tropical garden!--upon the elaborate culture of which a whole family relied for subsistence.

Although from the extensive plantain walks in our colonies--which are seldom cultivated with a garden-like care--so large an average proportion may not be obtained as twenty times the production of wheat in Europe, yet I have had practical experience of the prodigious quant.i.ty of farinaceous matter obtainable from an acre of tolerably well-cultivated plantains, and no esculent plant requires less labor in its culture upon land suitable for its production. They are readily increased by suckers, which the old plants produce in abundance.

Lindley enumerates ten species of Musa, some of which grow to the height of 25 or 30 feet, but that valuable species _M. Cavendishii_, does not grow more than four or five feet high.

The bananas of the family of the Musaceae, appear to be natives of the southern portion of the Asiatic continent (R. Brown, "Bot. of Congo,"

p. 51). Transplanted at an unknown epoch into the Indian Archipelago and Africa, they have spread also into the, New World, and in general into all intertropical countries, sometimes before the arrival of Europeans.

According to Humboldt it affords, in a given extent of ground, forty-four times more nutritive matter than the potato, and 133 times more than wheat. These figures must be considered as only approximative, since nothing is more difficult than to estimate the nutritive qualities of different aliments.

_Musa paradisiaca_ is cultivated in Syria, to lat.i.tude 34 deg.

Humboldt says it ceases to yield fruit at a height of 3,000 feet, where the mean annual temperature is 68 deg., and where, probably, the heat of summer is deficient.

The banana seems, however, to be found no higher than 4,600 feet in a state of perfection.

No fruit is so easily cultivated as are the varieties of the plantain.

There is hardly a cottage in the tropics that is not partly shaded by them; and it is successfully grown under other fruit trees, although it is independent of shelter. Its succulent roots and dew-attracting leaves render it useful in keeping the ground moist during the greatest heats. The plantain may be deemed the most valuable of fruits, since it will, in some measure, supply the place of grain in time of scarcity. To the negroes in the West Indian Islands the plantain is invaluable, and, like bread to the Europeans, is with them denominated the staff of life. In Jamaica, Demerara, Trinidad, and other princ.i.p.al colonies, many thousand acres are planted with these trees.

The vegetation of this tree is so rapid that if a line of thread be drawn across, and on a level with the top of one of the leaves, when it begins to expand, it will be seen, in the course of an hour, to have grown nearly an inch. The fruit when ripe is of a pale yellow, about a foot in length and two inches thick, and is produced in bunches so large as each to weigh 40 lbs. and upwards.

The soil best suited to the growth of the plantain is found in the virgin land most recently taken in from the forest, having a formation of clay and decomposed vegetable substances. A large portion of organic matter is required, as well as clay or other ponderous strata, to afford the greatest production of fruit. I have known good plantains produced in the West Indies, upon land considerably exhausted by the culture of cotton, but which was enriched by the application of a quant.i.ty of the decomposed seed of that shrub near the roots of the young plantains.

In the Straits' settlements of the East, the following are the most approved varieties:--The royal plantain, which fruits in eight months; one which bears in a year, the milk plantain, the downy plantain, and the golden plantain or banana. A species termed _gindy_ has been lately imported from Madras, where it is in great request. It has this advantage over the other kinds, that it can be stewed down like an apple while they remain tough.

The Malays allege that they can produce new varieties, by planting three shoots of different sorts together, and by cutting the shoots down to the ground three successive times, when they have reached the height of nine or ten inches.

About 144 suckers of the plantain are set on an orlong (1-1/3 acres), each of which spreads into a group of six or eight stems, of about six inches to one foot in diameter, which yield each a bunch of fruit, and are then cut down, when fresh shoots succeed. In very rich soils the plant will continue to bear for twenty years, but otherwise it is dug up after the seventh or eighth year. The cost of cultivating 100 orlongs of land exclusively with plantains, will be nearly 2,000 Spanish dollars until produce be obtained. About 43,200 bunches may be had afterwards yearly, which might give a return of 2,160 dollars, or, deducting the cost of cultivation and original expenses, a profit per annum of 1,450 dollars.

The plantain has frequently been suggested as an article of export from our colonies. A few bunches are occasionally brought over by the Royal West India Mail Company's steamers running to Southampton, but more as a curiosity than as articles of commerce.

In its ripe state no unexceptionable and sufficiently cheap method of preserving it has yet been suggested.

In some districts of Mexico it is, indeed, dried in the sun, and in this state forms a considerable article of internal commerce under the name of "plantado pasado."

It is sometimes so abundant and cheap in Demerara, Jamaica, Trinidad, and other of our colonies, that it might, if cut and dried, in its green state, be exported with advantage.

It is in the unripe state that it is so largely used by the peasantry of the colonies as an article of food. It has always been believed to be highly nutritive, but Dr. Shier states that, in any sample of the dried plantain which he a.n.a.lysed, he could not find a larger amount than 88 per cent of nitrogen, which corresponds with about 5 per cent. of proteine compounds.

When dried, and reduced to the state of meal, it cannot, like wheat flour, be manufactured into maccaroni or vermicelli, or at least the maccaroni made from it falls to powder when put into hot water. The fresh plantain, however, when boiled whole, forms a pretty dense firm ma.s.s, of greater consistency and toughness than the potato. The ma.s.s, beaten in a mortar, const.i.tutes the _foo-foo_ of the negroes. The plantain meal cannot be got into this state unless by mixing it up with water to form a stiff dough, and then boiling it in shapes or bound in cloths.

Plantain meal is prepared by stripping off the husk of the plantain, slicing the core, and drying it the sun. When thoroughly dry it is powdered and sifted. It is known among the Creoles of the West Indies under the name of _Conquin tay_. It has a fragrant odour, acquired in drying, somewhat resembling fresh hay or tea. It is largely employed as the food of infants, children, and invalids. As food for children and convalescents, it would probably be much esteemed in Europe, and it deserves a trial on account of its fragrance, and its being exceedingly easy of digestion. In respect of nutritiveness, it deserves a preference over all the pure starches on account of the proteine compounds it contains.

The plantain meal would probably be best and freshest were the sliced and dried plantain cores exported, leaving the grinding and sifting to be done in Europe. The flavor of the meal depends a good deal on the rapidity with which the slices are dried; hence the operation is only fitted for dry weather, unless indeed, when there was occasion for it, resource were had to a kiln or stove. Above all, the plantain must not be allowed to approach too closely to yellowness or ripeness, otherwise it becomes impossible to dry it. The color of the meal is injured when steel knives are used in husking or slicing, but silver or nickel blades do not injure the color. On the large scale a machine, on the principle of the turnip slicer, might be employed. The husking could be greatly facilitated by a very simple machine. Were the plantain meal to come into use in England, and bear a price in any way approaching to that of Bermuda arrowroot, it would become an extensive and very profitable export. Full-sized and well-filled bunches give 60 per cent. of core to 40 of husk and top-stem, but in general it would be found that the core did not much exceed 50 per cent., and the fresh core will yield 40 per cent. of dry meal, so that from 20 to 25 per cent. of meal is obtained from the plantain, or 5 lbs. from an average bunch of 25 lbs.; and an acre of plantain walk of average quality, producing during the year 450 such bunches, would yield a ton and 10 lbs. of meal, which, at the price of arrowroot, namely, 1s. per lb., would be a gross return of 112 10s. per acre. A new plantain walk would give twice as much. Even supposing the meal not to command over half the price of arrowroot, it would still form an excellent outlet for plantains whenever, from any cause, the price in the colony sank unusually low.

In respect of the choice of a situation for establishing a plantain walk, with a mill, boiling-house and drying ground, it will be necessary to fix upon new land with plenty of moisture, and flat if possible, in order that there may be no difficulty in making roads to carry the trees; whilst a deep river traversing the land, where there is no tide or danger of salt water--where facility would be afforded in making the basins wherein to wash the fibre; where a sea port would be near at hand for shipping the produce--where workmen, provisions, and fuel would be readily obtained, and where the climate is particularly healthy, should be especially sought after.

The plantain grows in profusion between the tropics in all parts of the world; but as it is an object to have the London market available for the prepared fibre, the following places may be mentioned as best calculated to produce a good and constant supply, viz:--the West India Colonies, the British Colonies in Africa, the South American Republics, along the Mosquito sh.o.r.e, and other places on the Continent of America, including Porto Rico, Hayti, and Cuba. The advantages to the paper manufacturer in employing the prepared fibre instead of rags, will be numerous, for the fibre is equal in texture, clean, and aromatic; whilst rags are dirty, full of vermin, and very often pestilential.

A large stock of the plantain can always be secured, without fear of its being injured by keeping. The paper will be superior to that made of rags, and the process of making it will be more economical, inasmuch as the _sorting_ of the material will not be required.

Another advantage is, that a new article of commerce will be opened for the benefit of the colonial shipping interests, and a stimulus will be given to the cultivation of a fruit which is the favorite food of large ma.s.ses of the population.

The following is a "specification" of articles requisite for making three tons of prepared fibre in a day:--

Four wooden boilers lined with lead, in the form of coolers, 7 feet deep by 6 in diameter. One hydraulic press, from 400 to 500 tons. One stout screw press, to compress the fibre before it is submitted to the hydraulic press. One iron mill with horizontal cylinders. Six waggons; twenty mules. Utensils, such as spatulas, cutla.s.ses, hoes, rakes, &c.

&c. One lever, to take out the fibre from the boilers. One steam boiler, equal to 12-horse power, to steam the four wooden boilers.

It being very desirable that the works should be in the immediate neighbourhood of a river, the machinery should be worked by water-power; but if this mode should be inconvenient, a steam engine in addition must be obtained, of about 8 or 10-horse power; or if one steam engine of 20-horse power were employed, it would be sufficient for all purposes. Thirty men are required to make three tons of fibre in a day.

_Buildings_.--A store, 100 feet long by 25 feet broad, in wood, covered with straw, to contain the dried fibre and the presses. One open shed of the same dimensions, covered with straw for the boilers.

_Capital required_.--It is ascertained that the following outlay will be sufficient:--

The materials will cost 2,000 Buildings 500 Purchase of land 1,500 Working capital 1,000 ------ 5,000

The estimated expense in cultivating one quarree, or 5 1-5th English acres, in plantains, will be 30, as the work can be easily performed by one laborer in 300 days, at 2s. sterling per day.

A quarree will produce 18 tons of mill fibre, the cost of the preparation of which is as follows:--

For workmen's wages, soda, lime, and fuel, at 3 per ton 54 Freight to Europe at 4 per ton 72 Managers 30 Duty, insurance, office fees, &c., at 1 per ton 18 ---- 174

Thus, making the total expense of producing 18 tons of fibre 174, or 9 13s. 4d. per ton. In 1848 Manila rope, or plantain fibre of good quality, was worth 38 per ton.

A correspondent in Jamaica, who has devoted much attention to the subject, has furnished me with some very valuable detailed information, the most complete and practical that has ever yet appeared:--

_Cultivation_.--The first care of a planter in superintending the cultivation of the banana tree, with the two-fold object of collecting both fibre and fruit, will be to study the nature of the tree to which he will give the preference. A number of experiments have been made upon different species of the banana with a view of obtaining therefrom the largest quant.i.ty and the best color of fibre, as well as the finest fruit. Those experiments were very tedious and minute, but were absolutely necessary, in order to arrive at the most economical and advantageous method of rendering the fibre into a state fit for shipment to Europe. At the same time, it was of the utmost importance to find out the best description of tree, for producing the strongest, the most abundant, and the most silky fibre--for containing the least quant.i.ty of juice, for producing the color sufficiently white to facilitate the operation of bleaching, for bearing fruit of the most esteemed quality, and, therefore, the most favorable for general consumption.

A banana tree, which seemed at first sight to possess all those good qualities--being of a large size, with whitish or flaxen colored fibre, and producing very savoury fruit, only gave 2 per cent, of fibre after preparation; that is to say, 100 lbs. in its raw state, only gave two pounds of fibre after it was boiled. In endeavoring to find out the cause of such a small result, it was discovered that this specimen of banana (commonly called the "pig banana,") contained a larger proportion of water than of fibre, compared with other sorts--that the heart was too large, and that the inside leaves were so tender that they almost dissolved in the process of boiling. These were the greatest inconveniences of this species of tree. There was also another disadvantage, in the quality of its fruit, which was yellow in color, and not so useful as those descriptions of banana which are generally eaten as a subst.i.tute for bread. The results of several experiments made upon various descriptions of banana, demonstrated the properties of each species, both as regarded fibre and fruit. The most profitable in both respects is undoubtedly the yellow banana, or common plantain. This tree grows to the height of about fifteen feet, it is nine or ten inches in diameter, its fibre is firm and abundant, and its fruit is used both in a green and ripe state. This plantain abounds on the continent of Spanish America and between the tropics, where the natives cultivate it as producing the most nutricious fruit of its kind. Cargoes of the fruit are frequently exported from Surinam and Demerara. On the Spanish part of the American continent, land is measured by _fanegas_, each fanega containing twelve _quarrees_, and each quarree five and one-fifth English acres. A quarree measures one hundred geometrical paces, or three hundred square feet.

In the first instance, the suckers of the plantain (the tree being propagated by cuttings or suckers which shoot up from the bulb), should be set at ten feet distance from each other; this proposition gives 300 plants on one line of trees, or 900 on the surface of one quarree of land. Each plant propagates itself and gives upon an average ten trees of the same size and bearing. On one quarree of land, therefore there would be 9,000 trees, yielding four pounds of fibre and one bunch of fruit each, which is 9,000 bunches of fruit, and 36,000 lbs. nett of fibre, in the whole. In good ground the same plant will last fifteen years without any further trouble. Flat lands ought to be cultivated in preference to any other. The plantain thrives with the root in the water, and the head to the sun. On the borders of the river Orinoco it grows to the height of twenty feet, is one foot in diameter, and the stalks of the branches are three inches in circ.u.mference.

_Cutting_.--The tree which has not produced its ripe fruit ought to be cut, for two reasons--first, that the fruit be not lost; and secondly, that the tree will not have arrived at its full growth and ordinary size, and the fibres will be too tender. In cutting it down, take it off six inches above the surface of the ground, then divide it longitudinally into four parts, take out the heart, which must be left to serve for manure, and if fermentation is decided upon, leave the pieces at the foot of the tree, otherwise take them to the mill to be crushed. The tree being very tender, may, on being bent down, be cut asunder with a single stroke of a hatchet, cutla.s.s, or other convenient instrument. One man can cut down 800 trees, and split them in a day.

_Carrying_.--The trees being thus divided, may be immediately carried to the mill to be crushed, or may remain until the fermentation separates the juice of sap from the fibres and the pith. By fermenting the trees, their weight will be so much reduced as to render their carriage considerably lighter than if taken away when first cut down. A wagon, with oxen or mules, can carry about a ton per day, and one man can load the wagon and drive the cattle.