Gold is widely diffused, and abandoned "washings" all over the state show how general the industry was at one time.
At some distance from the shaft a square water-tight wall was built, and the space between it and the shaft was filled in with sand, which was purified of all saline matter by repeated washings; on the ground-level perforated stones set at the four corners of the basin admitted the rain-water, which was discharged from the roofs by lead pipes; this water filtered through the sand and percolated into the shaft of the well, whence it was drawn in copper buckets.
In East Siberia gold is obtained almost exclusively from gravel-washings, quartz mining being confined to three localities, one near Vladivostok and two in Transbaikalia.
Gold was discovered by the Portuguese soon after their settlement of the coast in the 16th century, but the washings were poor and attracted little attention.
It was at one time proposed to treat the concentrated black iron obtained in the Ural gold washings, which consists chiefly of magnetite, as an iron ore, by smelting it with charcoal for auriferous pigiron, the latter metal possessing the property of dissolving gold in considerable quantity.
Two other facts are totally opposed to the origin of all the salinity of the oceans from the concentration of the washings of the land.
The water must in ritual washings run off in order to carry away the miasma or unseen demon of disease; and accordingly in baptism the early Christians used living or running water.
Give occasional washings with the engine to keep down insects.
In addition to the South American localities mentioned above, small diamonds have also been mined since their discovery in 1890 on the river Mazaruni in British Guiana, and finds have been reported in the gold washings of Dutch Guiana.
Humboldt searched for them in the Urals on account of the similarity of the gold and platinum deposits to those of Brazil, and small diamonds were ultimately found (1829) in the gold washings of Bissersk, and later at Ekaterinburg and other spots in the Urals.
Siberia has yielded isolated diamonds from the gold washings of Yenisei.
The filtered caustic liquor passes to the concentration plants; the washings are employed for diluting fresh vat-liquor for the next operation, or for dissolving solid soda-ash for the same purpose.
A smaller but still considerable portion exists here and in the washings in the shape of ammonium carbonates.
The existence of gold had long been suspected, and possibly known, in California before 1848, and there had been desultory washings in parts where there was very little to reward prospectors.
At the time of their greatest productiveness, from 1850 to 1853, the highest yield of the washings was probably not less than $65,000,000 a year; according to the state mining bureau the average production from 1851-1854 was $73,570,087 ($81,294,270 in 1852, the banner year), and from 1850-1861 $55,882,861, never falling below $50,000,000.
There are a great many placer washings, among which are some extensive deposits near the Straits of Magellan.
But results when the washings of fresh waste are added, has led to clearer proof that the heating of hay-stacks, hops, tobacco and other vegetable products is due to the vital activity of bacteria and fungi, and is physiologically a consequence of respiratory processes like those in malting.
Sometimes the opium is in a fluid state by reason of dew, and in some places it is rendered still more so by the practice adopted by collectors of washing their scrapers, and adding the washings to the morning's collection.
Vanadium salts may be obtained from mottramite by digesting the mineral with concentrated hydrochloric acid, the liquid being run off and the residue well washed; the acid liquid and the washings are then evaporated with ammonium chloride, when ammonium metavanadate separates.
In the Willamette Valley the soils are mostly clay loams, of a basaltic nature on the foothills and greatly enriched in the river bottom lands by washings from the hills and by deposits of rich black humus.
The gipsy community was bound to bring fifteen pounds weight of gold from the washings of the Argesh.
The last washing is done with pure water; these washings are used in the next day's boiling.
I searched in the washings for a diamond and found it myself--the only true diamond, they said, that was ever found in the United States.