Description of Oregon and California : embracing an account of the gold regions : to which is added an appendix, containing descriptions of various kinds of gold, and methods of testing its genuineness.

The gentleman and traders guide : containing a description and use of the newest invented instrument, ever made publick, for preventing frauds by counterfeit gold ... the instrument is neatly made in brass, and very easily portable for the pocket.
by: Bradford, William, teacher of mathematicks

Philadelphia, January 8th, 1793 : Sir, I have the honor to inclose you a report of the assays and experiments made on the gold and silver coins of France, Spain, England, and Portugal ...

Copious and correct tables for ascertaining the increase or decrease of gold and silver in bars : according to the Assay Master's report.
Published: (1819)

L'art d'essayer l'or et l'argent : tableau comparé de la coupellation des substances métalliques, par le moyen du plomb ou du bismuth : procédés pour obtenir l'or plus pur que par la voie du départ /
by: Sage, Balthazar Georges, 1740-1824
Published: (1780)

L'art d'essayer l'or et l'argent : tableau comparé de la coupellation des substances métalliques, par le moyen du plomb ou du bismuth : procédés pour obtenir l'or plus pur que par la voie du départ /
by: Sage, Balthazar Georges, 1740-1824
Published: (1780)

Arrest du Conseil d'Estat du roy, portant reglement pour le commerce des matieres d'or & d'argent : du 20 avril 1726.
Published: (1726)

The description and use of a new-invented portable instrument, for detecting frauds in base and counterfeit gold, by shewing the true weight of every piece of gold coin now current, with the quantity of gold and alloy in each, and also of adulteration, if any, it also proves the real value of rings, and other small toys made of gold. These instruments are made and sold, wholesale and retail, by John Warner, of campden.
by: Warner, John, of Campden

Gold in igneous, sedimentary, and metamorphic rocks /
by: Jones, Robert Sprague, 1913-
Published: (1969)

Tablas para la reducción del oro y la plata : y para calcular la cantidad de oro que contiene una pieza de plata de ley, asi como el valor del oro á 135 pesos 6 reales el marco (con cerca de 18000 cálculos) /
by: Notley, Samuel
Published: (1828)

Assay practice on the Witwatersrand /
by: Dillon, V. S.
Published: (1955)

Memoire dans lequel on examine quelle est la nature de l'effet que produit sur l'or fin l'acide nitreux : lorsqu'on le fait bouillir longtemps, & réduire à une petite quanitité de liqueur sur ce métal.
Published: (1780)

Mémoire sur un moyen nouveau de faire avec exactitude, le départ d'un grand nombre d'essais d'or à différens titres : & d'appliquer dans le même temps cette opération à tous ces essais réunis dans un seul matras /
by: Tillet, Mathieu, approximately 1720-1791
Published: (1781)

California coiners and assayers : by Dan Owens ; introduction by Q. David Bowers.
by: Owens, Dan
Published: (2000)

A familiar explanation of the art of assaying gold and silver : and its bearing upon the interests of the public demonstrated : with considerations on the importance of the Pix Jury : a review of the past and present state of the goldsmiths' trade, and a table, shewing the mixture and sterling value per ounce of every quality of gold that can be alloyed /
by: Watherston, James H. (James Henry)
Published: (1847)

Arrêt du Conseil d'Etat du roi, et lettres patentes sur icelui, qui commettent le Sieur Darcet, de l'Académie des sciences, pour exercer conjointement avec le Sieur Tillet, inspecteur général des essais & affinages, & en son absence, les fonctions qui lui ont ét attribuées par l'arrêt du 2 août 1764 : & ordonne qu'en cas de décès du Sieur Tillet, le Sieur Darcet lui succédera dans l'exercice de ces mêmes fonctions : du 21 mai 1785.
Published: (1785)

The determination of gold in geologic materials by neutron-activation analysis using fire assay for the radiochemical separations /
by: Rowe, Jack James, 1919-, et al.
Published: (1968)

Sir Isaac Newton's table of the assays, weights and values, of most foreign silver, and gold coins, actually made at the mint by order of the Privy Council : with notes and explanations, shewing the methods of keeping accounts in those cities, on which negotiations in bills are usually made : and a calculation of the real or intrinsic par of exchange.
Published: (1731)

Mineral resource assessment of gold and silver in the Greenville 1 x 2 quadrangle, South Carolina, Georgia, and North Carolina /
Published: (1993)

The doctrine of gold and silver computations : in which is included, that of the par of money : the proportion in value between gold and silver, and the valuation of gold, silver, and parting assays : with useful tables and copper-plates /
by: Snelling, Thomas, 1712-1773

A discovery of subterranean treasure : viz. all manner of mines & minerals, from the gold to the coal, with plain directions and rules for finding them in all kingdoms and countries. : Also the art of melting, refining and assaying them made plain and easy ... : To which is added a real experiment, to try whether a piece of gold be true or counterfeit ... : Also a sure way to try what colour any berry, leaf, flower, stalk, root, fruit, seed, bark or wood will give: together with directions for making colours that shall not stain nor fade. : Very necessary for everyone to know, whether he be a traveller by land or sea, or in what country, dominion, or plantation soever he may inhabit. /
by: Plattes, Gabriel, active 1638-1640
Published: (1792)

A discovery of subterranean treasure : viz. all manner of mines & minerals, from the gold to the coal, with plain directions and rules for finding them in all kingdoms and countries. : Also the art of melting, refining and assaying them made plain and easy ... : To which is added a real experiment, to try whether a piece of gold be true or counterfeit ... : Also a sure way to try what colour any berry, leaf, flower, stalk, root, fruit, seed, bark or wood will give: together with directions for making colours that shall not stain nor fade. : Very necessary for everyone to know, whether he be a traveller by land or sea, or in what country, dominion, or plantation soever he may inhabit. /
by: Plattes, Gabriel, active 1638-1640
Published: (1792)

A discovery of subterranean treasure : containing useful explorations, concerning all manner of mines and minerals, from the gold to the coal; with plain directions and rules for the finding of them in all kingdoms and countries. : In which the art of melting, refining, and assaying of them is plainly declared ... : Whereunto is added a real experiment whereby every ignorant man may presently try whether any piece of gold that shall come to his hands be true or counterfeit ... : Also a perfect way to try what colour any berry, leaf, flower, stalk, root, fruit, seed, bark, or wood will give: with a perfect way to make colours that they shall not stain nor fade like ordinary colours. : Very necessary for every one to know, whether he be a traveller by land or by sea, in what country, dominion, or plantation soever he shall either sojourn or inhabit. /
by: Plattes, Gabriel, active 1638-1640

The goldsmith's repository : containing a concise elementary treatise on the art of assaying metals : rules, directions, and correct extensive tables, ... also an appendix, in which are contained abstracts of all the acts of Parliament, now in force, relating to gold and silver ; and a view of all the changes in their respective standards /
by: Alldridge, W. J.

An atomic-absorption method for the determination of gold in large samples of geologic materials /
by: VanSickle, Gordon H., et al.
Published: (1968)

The doctrine of gold and silver computations : in which is included, that of the par of money : the proportion in value between gold and silver, and the valuation of gold, silver, and parting assays : with useful tables and copper-plates /
by: Snelling, Thomas, 1712-1773

Quilatador de la plata, oro, y piedras /
by: Arfe y Villafañe, Juan de, 1535-1603
Published: (1572)

The real or intrinsic par of exchange, between London and the other cities on which negotiations in bills are usually made : calculated from the actual assays made at the mint /

Tests for gold and silver in shales from western Kansas /
by: Lindgren, Waldemar, 1860-1939
Published: (1902)

The assayer's guide : or, Practical directions to assayers, miners and smelters, for the test and assays, by heat and by wet processes, of the ores of all the principal metals, of gold and silver coins and alloys, and of coal, &c. /
by: Lieber, Oscar M. (Oscar Montgomery), 1830-1862
Published: (1899)

Comparison of a wet and crucible-fire methods for the assay of gold telluride ores, with notes on the errors occurring in the operations of fire assay and parting /
by: Hillebrand, W. F. (William Francis), 1853-1925, et al.
Published: (1905)

Dissertatio de docimastice metallica : qvam ad diem Junii XIX /
by: Borch, Ole, 1626-1690
Published: (1677)

Microbiological assay : an introduction to quantitative principles and evaluation /
by: Hewitt, William, 1918-
Published: (1977)

Tablas de las cuentas de valor liquido de la plata del diezmo : y del intrinseco y natural de la que se llama quintada y de la reduccion de sus leyes a la de 12. dineros ; segun las novissimas ordenanzas de Su Magestad y de los derechos que de la plata y oro se le pagan en estos reynos en conformidad de sus leyes reales y cedulas /
by: Fagoaga Iragorri, Francisco, 1679-1736
Published: (1773)

Map showing characteristics of lode gold in the Medford 1⁰ x 2⁰ quadrangle, Oregon-California /
by: Page, Norman J.
Published: (1983)

Gold in California.
by: Wellman, Paul I. (Paul Iselin), 1898-1966
Published: (1958)

Elements of the art of assaying metals : in two parts : the first containing the theory, the second the practice of the said art : the whole deduced from the true properties and nature of fossils, confirmed by the most accurate and unquestionable experiments, explained in a natural order, and with the utmost clearness /
by: Cramer, Johann Andreas, 1710-1777