The extraction of gold may be effected by several methods; we may distinguish the following leading types: 1.
Extraction of cane juice by diffusion (a process more fully described under the head of beetroot sugar manufacture) is adopted in a few plantations in Java and Cuba, in Louisiana Etr cti o n and the Hawaiian Islands, and in one or two factories y f i in Egypt; b u t hitherto, except under exceptional conditions (as at Aska, in the Madras Presidency, where the local price for sugar is three or four times the London price), it would not seem to offer any substantial advantage over double or triple crushing.
The best results from extraction by diffusion have been obtained in Java, where there is an abundance of clear, good water; but in the Hawaiian Islands, and in Cuba and Demerara, diffusion has been abandoned on several well mounted estates and replaced by double and triple crushing; and it is not likely to be resorted to again, as the extra cost of working is not compensated by the slight increase of sugar produced.
The increase in the output for a given time obtained by the use of the Krajewski crusher has been estimated at 20 to 25% and varies with the quality of the canes; while the yield of juice or extraction is increased by I or 2%.
The resulting compound, nickel carbonyl, which was described to the Chemical Society in 1890, is both formed and decomposed within a very moderate range of temperature, and on this fact he based a successful process for the extraction of nickel from its ores.
On Josephine's entreaties, the emperor commuted the sentence for eight of the well-connected men among them; Cadoudal and others of lower extraction were executed on the 24th of June.
The Liber abaci, which fills 459 printed pages, contains the most perfect methods of calculating with whole numbers and with fractions, practice, extraction of the square and cube roots, proportion, chain rule, finding of proportional parts, averages, progressions, even compound interest, just as in the completest mercantile arithmetics of our days.
Lead unites readily with almost all other metals; hence, and on account of its being used for the extraction of (for instance) silver, its alchemistic name of saturnus.
Gordon, a Dutch officer -of Scottish extraction, who commanded the garrison at Cape Town, reached the river in its middle course at the spot indicated by Sparrman and named it the Orange in honour of the prince of Orange.
He was of French extraction, his great grandfather, a cavalry captain, having passed from the service of France to that of Sardinia, and settled in Turin under Emmanuel II.
Some 12,500 are of Dutch extraction; these live chiefly in the districts of Utrecht and Vryheid.
The quantity of the juice is the test to which recourse must be had in judging the efficiency of the extraction, while the quality is the main factor to be taken into account with regard to the results of subsequent manufacture.
MOROSINI, a noble Venetian family, probably of Hungarian extraction, which gave many doges, statesmen, generals and admirals to the Venetian Republic, and cardinals to the Church.
The first is the extraction and preparation of the lac; the second, its application; and the third, the decoration of the lacquered surface.
(d) Sunnite Moslems are a weak element, strongest in Shuf and Kurah, and composed largely of Druse renegades and "Druse" families, which, like the Shehab, were of Arab extraction and never conformed to the creed of Hamza.
MARTIN CHEMNITZ (or KEMNITZ) (1522-1586), German Lutheran theologian, third son of Paul Kemnitz, a cloth-worker of noble extraction, was born at Treuenbrietzen, Brandenburg, on the 9th of November 1522.
Extraction of Gold by Washing.
The extraction of gold from auriferous minerals by fusion, except as an incident in their treatment for other metals, is very rarely practised.
It may be noticed that the potassium zinc cyanide is useless in gold extraction, for it neither dissolves gold nor can potassium cyanide be regenerated from it.
Eissler, Cyanide Process for the Extraction of Gold, which pays particular attention to the Witwatersrand methods; Alfred James, Cyanide Practice; H.
If we add to these the native whites of foreign parentage (5,300,924) we have 11,152,323 persons of foreign extraction or 39'4% of the total labour force.
The extraction from ores in which the bismuth is present in the metallic condition may be accomplished by a simple liquation, or melting, in which the temperature is just sufficient to melt the bismuth, or by a complete fusion of the ore.
Nationalization and expropriation are wealth-extraction methods that typically only work once.
If Tamer didn't find the tidbit of history from the time-before-time about forced soul extraction, the plan was never going to have more than a five percent chance of working, even with Wynn.
Several companies are devoting all their energies to zinc extraction, and the output is now equal to about 5% of the world's production.
The extraction (as is the case with all the rare earths) is a matter of great difficulty.
As quarried or mined free sulphur is always contaminated with limestone, gypsum, clay, &c.; the principle underlying its extraction from these impurities is one of simple liquation, i.e.
Up to this time the rule of the Bhonsla rajas, rough warriors of peasant extraction, had been on the whole beneficent; but, soured by his defeat, Raghoji now set to work to recover some of his losses by a ruthless exploitation of the peasantry, and until the effective intervention of the British in 1818 the country was subjected to every kind of oppression.
Among the contents of this book we simply mention a trigonometrical chapter, in which the words sinus versus arcus occur, the approximate extraction of cube roots shown more at large than in the Liber abaci, and a very curious problem, which nobody would search for in a geometrical work, viz.
BARBERINI, the name of a powerful Italian family, originally of Tuscan extraction, who settled in Florence during the early part of the 11th century.
The extraction of the metal from pure (or nearly pure) galena is the simplest of all metallurgical operations.
Bunsen, the best source of rubidium and caesium salts is the residue left after extraction of lithium salts from lepidolite.
Formerly the color-print artist was of mean extraction and low social position, but he now has some recognition at the hands of the professors of more esteemed branches of art.
It is used in the extraction of sugar from molasses, since it combines with the sugar to form a soluble saccharate, which is removed and then decomposed by carbon dioxide.
The mother liquors used to be thrown away, but are now utilized for the extraction of their iodine.
The canes in each case are assumed to contain 88% of juice and 12% of fibre, and the extraction by milling to be 75% of the weight of canes - the evaporative power of the factory being equal to 622 tons per 24 hours.
In India at the present day there are thousands of small mills worked by hand, through which extraction the peasant cultivators pass their canes two or three at a time, squeezing them a little, and extracting per haps a fourth of their weight in juice, from which they make a substance resembling a dirty sweetmeat rather than sugar.
Passing the canes through three consecutive sets of rollers, in order to extract everything possible of extraction by pressure) is employed.
THEODULF, bishop of Orleans, was born about the middle of the 8th century, of a noble family of Gothic extraction, probably in Spain.
In addition to rice-growing and the felling and extraction of timber, and the fisheries, the chief occupations are rice-husking, silk-weaving and dyeing.
There are also about 4500 Natalians of German extraction, settled mainly in the New Hanover and Umzimkulu districts.