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Updated: June 21, 2025
The gold-fever was then at its height in Australia. The precious metal had been discovered some years before, but about a month previous to the arrival of the Galatea in Sydney, news had come down the country of the discovery of a new auriferous region, the richness and extent of which was said to be something past belief.
It would no doubt have been more prudent to have resumed the works on the auriferous stratum of the Real de Santa Barbara. The zone of gneiss just mentioned is, in the coast-chain from the sea to the Villa de Cura, ten leagues broad.
The arastra is a slow instrument, but in some important respects it is superior to any other method of working auriferous quartz. It grinds the quartz well, is unsurpassable as an amalgamator, is very cheap and simple, requires no chemical knowledge or peculiar mechanical skill in the work, requires but little power, and very little water all of them important considerations.
Leaving Hannan's on our left, we continued our northerly course, over flat country timbered with the usual gum-forest, until we reached the auriferous country in which our camp had been robbed by the blacks; nothing of interest occurring until January 17th, when we found ourselves without water.
Between Point Mendocino, in California, and the mouth of the Umpqua River, in Oregon, the beach-sand contains gold, and in some places it is very rich. The beach is narrow, and lies at the foot of a bluff bank of auriferous sand. In times of storm, the waves wash against this bank, undermine it, sweep away the pieces which tumble down, leaving the gold on the beach.
On its western slope lies the famous auriferous and platiniferous land,* which has during ages yielded more than 13,000 marks of gold annually. The two former of these auriferous rivers are tributary streams of the Rio San Juan del Choco; the second empties its waters into the Atrato.
Towards the end of 1867 a man named Nash, who had been wandering in an idle way over the country, found an auriferous region of great extent at Gympie, about 130 miles from Brisbane. He concealed his discovery for a time, and set to work to collect as much of the gold as possible, before attracting others to the spot.
The rocky walls, which met overhead like an arch, were composed entirely of auriferous quartz, the gold gleaming in it here and there in long thin flakes.
This characteristically feminine theory of auriferous deposits did not commend itself to the masculine intelligence: it was Mr. Doman's belief that gold was found in a liquid state.
Their auriferous contents vary still more than their width. The richest ore, worth from one to four ounces per ton, occurs in irregular patches and bands very small in comparison with the bulk of the ore stuff, which varies in value from two to seven pennyweights per ton.
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