The History of Sumatra eBook

William Marsden
This eBook from the Gutenberg Project consists of approximately 680 pages of information about The History of Sumatra.

The History of Sumatra eBook

William Marsden
This eBook from the Gutenberg Project consists of approximately 680 pages of information about The History of Sumatra.

In the districts situated inland of Padang, which is the principal mart for this article, little is collected otherwise than from mines (tambang) by people whose profession it is to work them, and who are known by the appellation of orang gulla.  The metal brought down for sale is for the most part of two sorts, distinguished by the terms amas supayang and amas sungei-abu, from the names of places where they are respectively procured.  The former is what we usually call rock-gold, consisting of pieces of quartz more or less intermixed with veins of gold, generally of fine quality, running through it in all directions, and forming beautiful masses, which, being admired by Europeans, are sometimes sold by weight as if the whole were solid metal.  The mines yielding this sort are commonly situated at the foot of a mountain, and the shafts are driven horizontally to the extent of from eight to twenty fathoms.  The gold to which sungei-abu gives name is on the contrary found in the state of smooth solid lumps, in shape like gravel, and of various sizes, the largest lump that I have seen weighing nine ounces fifteen grains, and one in my possession (for which I am indebted to Mr. Charles Holloway) weighing eight grains less than nine ounces.  This sort is also termed amas lichin or smooth gold, and appears to owe that quality to its having been exposed, in some prior state of the soil or conformation of the earth, to the action of running water, and deprived of its sharp and rough edges by attrition.  This form of gravel is the most common in which gold is discovered.  Gold-dust or amas urei is collected either in the channels of brooks running over ground rich in the metal, in standing pools of water occasioned by heavy rains, or in a number of holes dug in a situation to which a small rapid stream can be directed.

The tools employed in working the mines are an iron crow three feet in length, called tabah, a shovel called changkul, and a heavy iron mallet or hammer, the head of which is eighteen inches in length and as thick as a man’s leg, with a handle in the middle.  With this they beat the lumps of rock till they are reduced to powder, and the pounded mass is then put into a sledge or tray five or six feet long and one and a half broad, in the form of a boat, and thence named bidu.  To this vessel a rope of iju is attached, by which they draw it when loaded out of the horizontal mine to the nearest place where they can meet with a supply of water, which alone is employed to separate the gold from the pulverized quartz.

In the perpendicular mines the smooth or gravel-gold is often found near the surface, but in small quantities, improving as the workmen advance, and again often vanishing suddenly.  This they say is most likely to be the case when after pursuing a poor vein they suddenly come to large lumps.  When they have dug to the depth of four, six, or sometimes eight fathoms (which they do at a venture, the surface not

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The History of Sumatra from Project Gutenberg. Public domain.