Part 27 (1/2)

Volcanoes of the Philippines and Other Pacific Islands.

We cannot do better than open this chapter with an account of the work of volcanoes in the mountain-girdled East Indian island of Java. This large and fertile tropical island has a large native population, and many European settlers are employed in cultivating spices, coffee and woods. The island is rather more than 600 miles long, and it is not 150 miles broad in any part; and this narrow shape is produced by a chain of volcanoes which runs along it. There is scarcely any other region in the world where volcanoes are so numerous, even in the East, where the volcano is a very common product of nature. Some of the volcanoes of Java are constantly in eruption, while others are inactive.

One of their number, Galung Gung, was previous to 1822 covered from top to bottom with a dense forest; around it were populous villages. The mountain was high; there was a slight hollow on its top--a basin-like valley, carpeted with the softest sward; brooks rippled down the hillside through the forests, and, joining their silvery streams, flowed on through beautiful valleys into the distant sea. In the month of July, 1822, there were signs of an approaching disturbance; this tranquil peacefulness was at an end; one of the rivers became muddy, and its waters grew hot.

In October, without any warning, a most terrific eruption occurred. A loud explosion was heard; the earth shook, and immense columns of hot water, boiling mud mixed with burning brimstone, ashes and stones, were hurled upwards from the mountain top like a waterspout, and with such wonderful force that large quant.i.ties fell at a distance of forty miles.

Every valley near the mountain became filled with burning torrents; the rivers, swollen with hot water and mud, overflowed their banks, and swept away the escaping villagers; and the bodies of cattle, wild beasts, and birds were carried down the flooded stream.

ERUPTION OF GALUNG GUNG

A s.p.a.ce of twenty-four miles between the mountain and a river forty miles distant was covered to such a depth with blue mud, that people were buried in their houses, and not a trace of the numerous villages and plantations was visible. The boiling mud and cinders were cast forth with such violence from the crater, that while many distant villages were utterly destroyed and buried, others much nearer the volcano were scarcely injured; and all this was done in five short hours.

Four days afterwards a second eruption occurred more violent than the first, and hot water and mud were cast forth with ma.s.ses of slag like the rock called basalt some of which fell seven miles off. A violent earthquake shook the whole district, and the top of the mountain fell in, and so did one of its sides, leaving a gaping chasm. Hills appeared where there had been level land before, and the rivers changed their courses, drowning in one night 2,000 people. At some distance from the mountain a river runs through a large town, and the first intimation the inhabitants had of all this horrible destruction was the news that the bodies of men and the carcases of stags, rhinoceroses, tigers, and other animals, were rus.h.i.+ng along to the sea. No less than 114 villages were destroyed, and above 4,000 persons were killed by this terrible catastrophe.

Fifty years before this eruption, Mount Papandayang, one of the highest burning mountains of Java, was constantly throwing out steam and smoke, but as no harm was done, the natives continued to live on its sides.

Suddenly this enormous mountain fell in, and left a gap fifteen miles long and six broad. Forty villages were destroyed, some being carried down and others overwhelmed by mud and burning lava. No less than 2,957 people perished, with vast numbers of cattle; moreover, most of the coffee plantations in the neighboring districts were destroyed.

Even more terrible was the eruption of Mount Salek, another of the volcanoes of Java. The burning of the mountain was seen 100 miles away, while the thunders of its convulsions and the tremblings of the earth reached the same distance. Seven hills, at whose base ran a river--crowded with dead buffaloes, deer, apes, tigers, and crocodiles--slipped down and became a level plain. River-courses were changed, forests were burnt up, and the whole face of the country was completely altered.

Later volcanic eruptions in Java include that of 1843, when Mount Guntur flung out sand and ashes estimated at the vast total of thirty million tons, and those of 1849 and 1872 when Mount Merapi, a very active volcano, covered a great extent of country with stones and ashes, and ruined the coffee plantations of the neighboring districts.

We have said nothing concerning the most terrible explosion of all, that of the volcanic island of Krakatoa, off the Javan coast. This event was so phenomenal as to deserve a chapter of its own, for which we reserve it.

The United States, as one result of its recent acquisition of island dominions, has added largely to its wealth in volcanic mountains. The famous Hawaiian craters, far the greatest in the world, now belong to our national estate, and the Philippine Islands contain various others, of less importance, yet some of which have proved very destructive. A description of those of the Island of Luzon, which are the most active in the archipelago, is here sub-joined.

THE LUZON VOLCANOES.

Volcanoes have played an important part in the formation of the Philippine Islands and have left traces of their former activity in all directions. Most of them, however, have long been dead and silent, only a few of the once numerous group being now active. Of these there are three of importance in the southern region of Luzon--Taal, Bulusan and Mayon or Albay.

The last named of these is the largest and most active of the existing volcanoes. In form it is of marvellous grace and beauty, forming a perfect cone, about fifty miles in circuit at base and rising to a height of 8,900 feet. It is one of the most prominent landmarks to navigators in the island. From its crater streams upward a constant smoke, accompanied at times by flame, while from its depths issue subterranean sounds, often heard at a distance of many leagues. The whole surrounding country is marked by evidences of old eruptions.

This mountain, in 1767, sent up a cone of flame of forty feet in diameter at base, for ten days, and for two months a wide stream of lava poured from its crater. A month later there gushed forth great floods of water, which filled the rivers to overflow, doing widespread damage to the neighboring plantations. But its greatest and most destructive eruption took place in 1812, the year of the great eruption of the St.

Vincent volcano. On this fatal occasion several towns were destroyed and no less than 12,000 people lost their lives. The debris flung forth from the crater were so abundant that deposits deep enough to bury the tallest trees were formed near the mountain. In 1867 another disastrous explosion took place, and still another in 1888. A disaster different in kind and cause occurred in 1876, when a terrible tropical storm burst upon the mountain. The floods of rain swept from its sides the loose volcanic material, and brought destruction to the neighboring country, more than six thousand houses being ruined by the rus.h.i.+ng flood.

BULUSAN AND TAAL

Bulusan, a volcano on the southern extremity of the island, resembles Vesuvius in shape. For many years it remained dormant, but in 1852 smoke began to issue from its crater. In some respects the most interesting of these three volcanoes is that of Taal, which lies almost due south of Manila and about forty-five miles distant, on a small island in the middle of a large lake, known as Bombom or Bongbong. A remarkable feature of this volcanic mountain is that it is probably the lowest in the world, its height being only 850 feet above sea level. There are doubtful traditions that Lake Bombom, a hundred square miles in extent, was formed by a terrible eruption in 1700, by which a lofty mountain 8000 or 9000 feet high, was destroyed. The vast deposits of porous tufa in the surrounding country are certainly evidences of former great eruptions from Mount Taal.

The crater of this volcano is an immense, cup-shaped depression, a mile or more in diameter and about 800 feet deep. When recently visited by Professor Worcester, during his travels in these islands, he found it to contain three boiling lakelets of strangely-colored water, one being of a dirty brown hue, a second intensely yellow in tint, and the third of a brilliant emerald green. The mountain still steams and fumes, as if too actively at work below to be at rest above. In past times it has shown the forces at play in its depths by breaking at times into frightful activity. Of the various explosions on record, the three most violent were those of 1716, 1749, and 1754. In the last-named year the earth for miles round quaked with the convulsive throes of the deeply disturbed mountain, and vast quant.i.ties of volcanic dust were hurled high into the air, sufficient to make it dark at midday for many leagues around.

The roofs of distant Manila were covered with volcanic dust and ashes.

Molten lava also poured from the crater and flowed into the lake, which boiled with the intense heat, while great showers of stones and ashes fell into its waters.

VOLCANOES IN THE SOUTHERN ISLANDS