The History of Java, v. 1-2

by Sir Thomas Stamford Raffles

The constitution of the island is unfavourable to metals. All the examinations hitherto made confirm this assertion, and it may be laid down as a general position, that no metals occur, in such a quantity, or with such richness of ore, as to reward the operations of the miner. The only notice we have of the existence of gold or silver is contained in the first volume of the Transactions of the Batavian Society; and the attempts on the mountain of Párang, in 1723, and on the Mégeméndung, in 1744, were soon abandoned. Iron pyrites is found in small quantity in several districts, as well as red-ochre; which, however, often contains so little iron, as scarcely to serve for the common purpose of paint. The existence of mercury in the low lands of Démak, where it is distributed in minute particles through the clay of the rice-grounds bounding one of the principal rivers of that district, has not been considered as an indication of a mine, or of the ores of that metal.

No diamonds are found, nor other precious stones, but many minerals of the schorl, quartz, potstone, feldspar, and trap kind. They mostly exist in mountains of secondary elevation, towards the southern shores of the island, sometimes in extensive veins; but separate fragments are carried down by the rivers, and found far from their original deposition. Prase is found in very extensive veins; hornstone is also abundant in particular situations, as well as flint, chalcedony, hyalite, common jasper, jasper-agate, obsidian, and porphyry.

The soil in Java is for the most part rich, and remarkable for its depth; probably owing to the exclusively volcanic constitution of the country, and the constant accession of new mould, which is washed down the side of its numerous mountains. It has the character of being in a high degree richer than the ordinary soil of the Malayan countries in general, particularly of Sumatra and the Malayan peninsula. The best soil resembles the richest garden-mould of Europe; and whenever it can be exposed to the inundation necessary for the rice crop, requires no manure, and will bear without impoverishment, one heavy and one light crop in the year: the poorest, with this advantage, will yield a liberal return to the husbandman. In an island of such extent and variety of surface, the soil is necessarily various, but its general character is that of extraordinary fertility. The red and very light soil of the western districts is generally considered inferior to the dark brown and stiffer soil which prevails in the eastern. The best soil is usually found near the beds of rivers, in the valleys, and on the slopes of the largest mountains: the worst on the ranges of low calcareous hills, which run through different parts of the island.

The seasons, in all the countries situated within about ten degrees of the equator, agree in this: that as one eternal summer prevails, they are not distinguished as hot and cold, but as wet and dry. On Java the seasons depend upon the periodical winds. The period of the setting in of these winds is not determined within a few weeks; but generally the westerly winds, which are always attended with rain, are felt in October, become more steady in November and December, and gradually subside, till in March or April they are succeeded by the easterly winds and fair weather, which continue for the remaining half year. The heaviest rains are in the months of December and January, and the driest weather is in July and August; at which latter period, also, the nights are coldest and the days hottest. The weather is most unsettled when the season is changing, particularly at the first setting in of the westerly winds: but those violent storms and hurricanes, which are so often felt in the West Indies and in higher latitudes, are here unknown. With the exception of a few days at these periods, or when the westerly winds are at their height, vessels of any description may ride in safety in most of the bays along the northern coast of the island; and on shore, the wind is never so violent as to do damage. Thunder-storms are, however, frequent, and the lightning is extremely vivid. In the vicinity of the hills, and elsewhere during the dry season, seldom a day passes without thunder and lightning; and although these grand exhibitions of nature cause less consternation in general within the tropics than beyond them, it cannot be denied that they are destructive of many lives. Earthquakes are to be expected in a volcanic country, and are frequent in the vicinity of the volcanos; but the European towns have never sustained any serious injury from them.

During the rainy season there are many days free from showers. The mornings are generally clear, and although the rains sometimes continue without intermission for several days, and frequently fall in torrents, they are not marked on Java by that decided character, either of permanence or violence, which distinguishes the periodical rains of the continent of India; neither is the dry season distinguished by that excessive aridity which attends the hot seasons of that country. Even in July and August, the atmosphere is refreshed by occasional showers, and the landscape is at all times of the year covered with the brightest verdure. The thermometer of Fahrenheit has been known to rise along the northern coast as high as 90° about three in the afternoon, and even higher, particularly in the large and low capitals of Batavia, Semárang, and Surabáya; but from observations made during a course of some years at Batavia, and published under the authority of the Dutch government, it has been found usually to range between 70 and 74° in the evenings and mornings, and to stand about 83° at noon. By similar observations at Semárang, the same thermometer, placed in a spacious and open apartment, has averaged 87½° at noon.

At a distance inland of not more than thirty or forty miles, where the ascent is gradual, and of fifteen or twenty or less where it is rapid, the thermometer falls from five to ten degrees lower. At Chi-serúa, situated about 40 miles inland of Batavia, and Chi-pánas, about twelve miles further, on the opposite slope of the mountain Gedé, the thermometer ranges generally between 60 and 70°. In the morning, at six o'clock, it is sometimes as low as 57°; and in the afternoon, at three, its usual height is from 67 to 70°, but seldom rising to 72°. On some of the hills inland of Semárang, on which Europeans frequently reside during the dry season, at an elevation of about four thousand feet, the thermometer is frequently seen as low as 45°, and generally, in the clear season, ranges from 50 to 62°, and on the summit of one of the mountains (Sindóro) it has been observed as low as 27°[27]. Ice, as thick as a Spanish dollar, has been found; and hoar-frost, denominated bóhon úpas, or the poisonous dew, has been observed on the trees and vegetation of some of the higher regions.

By its insular situation, the climate of Java enjoys the benefit of land and sea breezes, which in its least favoured parts subdue the fierceness of the tropical rays, while the great elevation of its interior affords the rare advantage, that from the sea-shore up to the tops of the mountains, there is, almost from one end of the island to the other, a regular diminution of the temperature, at the rate of two or three degrees of Fahrenheit for every ten miles.

The general inference which has been drawn by professional men, from the experience which the occupation of Java by the British has afforded, is, that with the exception of the town of Batavia, and some parts of the northern coast, the island of Java stands on a level, in point of salubrity, with the healthiest parts of British India, or of any tropical country in the world.

The principal stations of the British army, composed of Europeans and Sepoys, were at Weltevreden, within three miles of the town of Batavia, and at Semárang and Surabáya, spots certainly less favourable to health than the rest of the island taken generally; but detachments from it have occasionally done duty in every district of the island.

The tables included in the Appendix[28], will shew, that notwithstanding the troops laboured under many disadvantages and privations, in point of accommodation, &c. to which they would not have been subjected in a more permanent settlement, and that they were otherwise exposed to diseases unconnected with those of the climate, the average casualties were not excessive. From the 1st November, 1813, to the same month in 1814, the average number of troops is stated to have been 7,470, the deaths 504, making a proportion of 1 to 14-8: the average number of sick in the same period was 862, making a proportion of sick to well as 1 to 8. From the beginning of November 1814 to the same month in 1815, out of an average number of troops stationed in different parts of the island, in corps and detachments, amounting to 7,487, there were 252 deaths, 63 of which were caused by fever, 123 by dysentery, and 65 by other diseases, making an average number of deaths of 21 per month, or in the proportion of one death to thirty men in the year, a proportion not exceeding that of some of the healthiest possessions in temperate climates.