Throughout the South Sea Islands, coco-nut palms abound, and oil may be obtained in various places. Some of the uninhabited islands are covered with dense groves, and the ungathered nuts, which have fallen year after year, lie upon the ground in incredible quantities. Two or three men, provided with the necessary apparatus for pressing out the oil, will, in the course of a week or two, obtain enough to load one of the large sea canoes. Coco nut oil is now manufactured in different parts of the South Seas, and forms no small part of the traffic carried on with trading vessels. A considerable quantity is annually exported from the Society Islands to Sydney. They bottle it up in large bamboos, six or eight feet long, and these form part of the circulating medium of Tahiti. The natives use the bruised fronds of Polypodium crassifolium to perfume this oil. Evodia triphylla, a favorite evergreen plant with the natives of the Polynesian Islands, is also used for this purpose.
The most favorable situation for the growth of the coco palm is the ground near the sea-coast, and if the roots reach the mud or salt water, they thrive all the better for it. The coco-nut walks are the real estates of India, as the vineyards and olive groves are of Europe. I have seen these palms growing well in inland situations, remote from the sea, but always on plains, never upon hills or very exposed situations, where they do not arrive to maturity, wanting shelter, and being shaken too violently by the wind. The stems being tall and slight, and the whole weight of leaves and fruit at the head, they may not unaptly be compared to the mast of a ship with round top and topmast without shrouds to support it. Ashes and fish are good manures for it.
The coco-nut is essentially a maritime plant, and is always one of the first to make its appearance on coral and other new islands in tropical seas, the nut being floated to them, and rather benefiting than otherwise by its immersion in the salt water. Silex and soda are the two principal salts which the coco-nut abstracts from the soil, and hence, where these do not exist in great abundance, the tree does not thrive well. I do not know myself what is the practice in Ceylon, but in Brazil, Dr. Gardner tells me, salt is very generally applied to the coco-nut when planted. Far in the interior, he states, he has seen as much as half a bushel applied to a single tree, and that too when it cost about 2s. a pound, from the great distance it had to be brought. That the application, therefore, of salt, of seaweed, and saline mud, does more than supply soda, must be very evident, if we only recollect how difficult it is to dry any part of our dress that has been soaked in salt water, and what effect damp weather has on table salt, which, in a balance, has often been made use of as an hydrometer. Moisture is always attracted by salt, and the more sea mud and other such little matters that coco-nut planters can apply round the roots of their trees, there will most assuredly be the less occasion for watering them in the dry season. Sea weed contains but very little fibrous matter, being chiefly composed of mucilage and water; and the experiments of Sir J. Pringle and Mr. C. W. Johnson, prove that salt in small quantities assists the decomposition of both animal and vegetable substances. Decomposed poonac, or oil-cake, is one of the best manures that can be applied, as it returns to the soil the component parts of which it has beau deprived to form the fruit.
The primary direction of the planter's industry will be to the establishment of a nursery of young plants. In Ceylon, for this purpose, the nuts are placed in squares of 400, covered with one inch of sand, or salt mud; are watered daily till the young shoots appear, and are planted out after the rains in September. Sand and salt mud are to be found on almost all the coasts where it would be desirable to plant nuts, and if they are put into the ground at the commencement of the rainy season, artificial watering will scarcely be necessary. Any period, when there are showers, would answer for transplanting them. I should say from the middle to the end of January would be best, when they are placed in the nursery in October and November; and in October when they are planted in June.
It is said that they should be allowed from 20 to 30 feet space apart, but I will calculate their return when planted 27 feet apart every way. This will give 58 coco-nut trees per acre. If manured, for the first two years, with seaweed and salt mud, and supplied with water in dry weather, there need be no loss, and the plants will thrive the better. The land must be kept clear of weeds till the plants are matured, in order to permit them abundance of air and light. In five years, when well cared for, the flower may be expected, but the plants will not be in full bearing before the seventh or eighth year. From 50 to 80 nuts are the annual crop of a tree; but I will calculate at the lowest rate. One hundred nuts will yield, when the oil is properly expressed, at least two gallons and a half. I shall not take into account the making of jaggery sugar and toddy, or spirit from the sap, as I do not consider that the manufacture would be remunerative; and it must be attended with much trouble, besides requiring a great deal of care and some skill.
Take the case now of a plantation of 100 acres in extent. This would give us 5,800 trees, which, at 50 nuts per tree, 290,000 nuts, at 2½ gallons of oil per hundred, would yield 7,250 gallons of oil, the value of which any person may calculate, but which, at the low rate of 3s. over charges, would furnish, as the gross plantation return in oil, a sum of £1,087 10s. sterling. If the cultivator, instead of making his produce into oil, were to sell it in its natural state, his gross return in the West Indies would be nearly £600 sterling, at the rate of ten dollars per thousand.
Either of these sums would be a handsome return from 100 acres of any land, requiring no cultivation or care whatever, after the fourth year, and yielding the same amount for upwards of half a century! But this is not all. An outlay of a few pounds will secure other advantages, and ought to enable the owner of a coco-nut plantation to turn his gross receipts for oil into nett profits. The coir made from the husk of the nut is calculated to realise nearly one-fourth of the proceeds of the oil, but if we put it down at one-fifth, we shall have, in addition to the value of the oil, £217 10s., thus making a total of £1,305 sterling. If we obtained 60 nuts from each tree, the return would be £1,566 sterling, and if 75, £1,957 8s. sterling; and this from 100 acres of sea side sand! But even this does not exhibit the whole return of this article of culture. Each nut may be calculated to give a quarter of a pound of poonac, or oil-cake, being the refuse after expression, fit for feeding all kinds of stock, which may be estimated as worth £10 per ton. We must, therefore, add on this account to our first calculation, the sum of say £325; to the second, £390; and to the third, £485. This would give, in round numbers, the entire returns of the 100 acres planted:—At 50 nuts per tree, £1,630; at 60 ditto, £1,957; at 75, ditto, £2,446.
These are striking results, and may appear exaggerated; but I will, to show how very moderate has been my calculation, give two returns, with which I have been favored from Ceylon. These, it will be seen, differ materially, but the latter I can rely on as a practical result, from a plantation in Jaffna, the peninsula of the northern portion of the island. After estimating the expense of establishing the plantation, the first writer sets down his return thus:—
"The produce, calculating 90 trees to an acre, and 75 nuts to a tree, sold at £2 per 1,000, would yield 675,000 nuts, worth £1,350; or if converted into oil, calculating 30 to give one gallon, it would produce 22,500 gallons, or about 90 tons from 100 acres."
From Jaffna, the following is an abridged estimate of return of 100 acres in full bearing:—"At 27 feet apart, 58 trees per acre, 5,800 trees, at 60 nuts per tree, 3,480 nuts per acre, 100 acres, 348,000 nuts, at 40 nuts per imperial gallon, 8,700 gallons of oil, at 2s. per gallon, netted £8 14s. per acre. The poonac left will pay the expense of making the oil. If shipped to England, at the present time (close of 1848), the selling price there being 55s. per cwt., measuring 12 imperial gallons, say, 4s. 7d. per gallon, and the cost and charges of sending it home and selling it being 23s., it would leave 3s. per gallon, or £13 per acre." This sum is nett proceeds.