 ... of Welsh Pool, in Montgomeryshire. This material being freed from all adhering pieces of slate and of .quartz, is ground to a fine powder; and being thus prepared, I mix, .with 27 parts of felspar, 18 of borax, 4 of Lynn sand, 3 of nitre, 3 of soda,...  The Technical repository, by T. Gill - Page 253edited by - 1822Full view - About this book
 | Science - 1821 - 476 pages
...sand, 3 of nitre, 3 of soda, and 3 of Cornwall china-clay. This mixture is melted into a frit, and ground to a fine powder, 3 parts of calcined borax being added previously to the grinding. This new glaze has been examined by competent artists in London appointed by the Society, and highly... | |
 | Royal Society of Arts (Great Britain) - Industrial arts - 1820 - 864 pages
...fine powder, and being thus prepared, I mix with 27 parts of felspar, 18 of borax, 4 of Lynn sand, 3 of nitre, 3 of soda, and 3 of Cornwall China clay....letter, are, ; . 1. The felspar in its rough state. . 9. Do. ground to a fine powder. 3. Some of the glaze ready prepared for dipping. . j 4. Specimens... | |
 | Industrial arts - 1821 - 454 pages
...of Cornwall china-clay. This mixture is to be melted to a frit, and is then to be ground to a floe powder, 3 parts of calcined borax being added previously to the grinding. The specimens accompaning this letter, are, 1. The felspar in its rough state. 2. Ditto ground to a fine powder.... | |
 | Colin Mackenzie - Chemistry - 1822 - 774 pages
...sand, 3 of nitre, 3 of soda, and 3 of Cornwall china-clay. This mixture is melted into a frit, and ground to a fine powder; 3 parts of calcined borax being added previously to the grinding. This new glaze has been examined by competent artists in London appointed by the Society of Arts, and... | |
 | 1824 - 492 pages
...sand, 3 of nitre, 3 of soda, and 3 of Cornwall china-clay. This mixture is melted into a frit, and ground to a fine powder, 3 parts of calcined borax being added previously to the grinding. This newglaze has been examined by competent artists in London appointed by the Society, and highly... | |
 | Luke Herbert - Industrial arts - 1826 - 408 pages
...fine powder; and being thus prepared, I mix, .with 27 parts of felspar, 18 of borax, 4 of Lynn sand, 3 of nitre, 3 of soda, and 3 of Cornwall china clay....powder. 3 Some of the glaze ready prepared for dipping. 4 Specimens of porcelain glazed. 5 Do. both glazed, and afterwards painted, in order to shew the solidity... | |
 | Industrial arts - 1826 - 490 pages
...18 of borax, 4 of Lynn sand, 3 of nitre, 3 of soda, and 3 of Cornwall china clay — This mixture is melted to a frit, and is then to be ground to a fine powder, 'B parts of calcined borax being added previously to the grinding. ESSAYS ON BLEACHING, By JAMES RENNIE,... | |
 | Henry Trueman Wood - Great Britain - 1913 - 640 pages
...fine powder, and being thus prepared, I mix with 27 parts of felspar, 18 of borax, 4 of Lynn sand, 3 of nitre, 3 of soda, and 3 of Cornwall china clay....calcined borax being added previously to the grinding." This was perhaps the first of the many felspathic glazes which have been suggested as substitutes for... | |
 | Physics - 1821 - 510 pages
...felspar, \8 of borax, 4 of Lynn sand, 3 of nitre, 3 of soda, and 3 of Cornwall China clay. This ajixture is to be melted to a frit, and is then to be ground...powder. 3. Some of the glaze ready prepared for dipping. 4. Specimens of porcelain glazed. $. Do. both glazed and afterwards painted, in order to show the solidity... | |
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