The British encyclopedia, or, Dictionary of arts and sciences, Том 3C. Whittingham, 1809 |
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... covered by a trans- parent vitreous coating . A method of taking off the enamel from any toy without injuring the metallic part , is often a desirable object . For this pur- pose a mixture of common salt , nitre , and alum in powder ...
... covered by a trans- parent vitreous coating . A method of taking off the enamel from any toy without injuring the metallic part , is often a desirable object . For this pur- pose a mixture of common salt , nitre , and alum in powder ...
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... covered some parts of it with minium , and again exposed it to the fire . The colours totally disappeared in those places where the red oxide of lead had been applied . When this experiment was performed on a larger scale , in a closed ...
... covered some parts of it with minium , and again exposed it to the fire . The colours totally disappeared in those places where the red oxide of lead had been applied . When this experiment was performed on a larger scale , in a closed ...
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... covered by two valves , p , q , to re- tain the water which has passed through them . A chamber , K , is screwed over these valves ; and has the air - vessel , k , fig . 1 and 2 , screwed into its top ; from each side of this chamber a ...
... covered by two valves , p , q , to re- tain the water which has passed through them . A chamber , K , is screwed over these valves ; and has the air - vessel , k , fig . 1 and 2 , screwed into its top ; from each side of this chamber a ...
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... covered equally and thin , and suffered to cool ; the drawing is then copied in outlines with a black - lead pencil on paper , which is laid with the pen , cilled side upon the wax , and the back rub- bed gently with the burnisher ...
... covered equally and thin , and suffered to cool ; the drawing is then copied in outlines with a black - lead pencil on paper , which is laid with the pen , cilled side upon the wax , and the back rub- bed gently with the burnisher ...
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... covered with ink and printed , would present a perfectly black impression upon the paper . To transfer the design to be scraped , it is usual to rub the rough side of the plate with a rag dipped into the scrapings of black chalk , or to ...
... covered with ink and printed , would present a perfectly black impression upon the paper . To transfer the design to be scraped , it is usual to rub the rough side of the plate with a rag dipped into the scrapings of black chalk , or to ...
Загальні терміни та фрази
acid angle animals appear applied axis birds body botany called calyx capsule centre circle class and order colour common considerable consists contain copper corolla degree denote diameter divided drupe earth ellipsis epact equal equation Essential character ether feet figure fire fish flowers fluid fluxion force four frustum genus give given glass globe gold grains ground half heat hence hermaphrodite horse hydrogen hydrometer inches insects iron Jussieu kind land length manner matter means ment metal Monogynia class motion muriatic acid Natural order nitric acid nouns observed oxide oxygen pass person petals piece plants plate produced proportion quantity raveline seeds shew ship side silver socage species specific gravity square substance sulphuric sulphuric acid supposed surface term thick thing tion trees tube tural uterus vessel weight whole zinc