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7.8.20

Coloring Gold.

Manufacturer and Builder 1, 1872 Gold is colored by two processes, called the dry and wet color; but the materials used in both cases are ...

13.6.18

(1564) To Give Brass A Gold Color.

The Manufacturer and Builder 6, 1876 It is simply a solution of alum in diluted muriatic acid, which is used by steeping in it for a few s...

28.6.17

Dictionarium polygraphicum. Dust. Brass dust. Silver dust. Gold dust. Tin dust or powder. Copper dust.

Dictionarium Polygraphicum: Or, The Whole Body of Arts Regularly Digested. Vol I. London: Printed for C. Hitch and C. Davis in Pater-nos...

20.9.15

Art Applied to Industry. — V. Gold and Silver.

The Gentleman's Magazine and Historical Review by Sylvanus Urban, Gent. July-December 1864 London John Henry and James Parker. 1864. ...

31.3.14

How Gold Pens and Pencils are Made.

Manufacturer and builder 1, 1871 The manufacture of gold pens has grown in a few years from an insignificant novelty to a business of well...

21.4.12

A History of Inventions and Discoveries: Gold Varnish.

A History of Inventions and Discoveries. By John Beckmann, Public professor of economy in the University of Gottingen. Translated from t...

9.1.09

To Prepare an Imitation of Gold Bronze.

Scientific American 36, 29.5.1847 Melt two ounces of tin, and mix it with one ounce of mercury; when this is cold, pulverize it, and add one...

7.12.08

Useful Receipts. Preparations of the Purple Powder of Cassius.

Scientific American 4, 13.10.1849 Dissolve 300 grains of gold in five times their weight of aqua regia, prepared from four parts of hydrochl...