The British encyclopedia, or, Dictionary of arts and sciences, Volumen3C. Whittingham, 1809 |
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... metal , is prohibited to be export- ed . The red emery is found in copper mines , and the little there is of it in England comes from Sweden and Denmark . The common emery is taken out of iron mines , and al- most the only sort used in ...
... metal , is prohibited to be export- ed . The red emery is found in copper mines , and the little there is of it in England comes from Sweden and Denmark . The common emery is taken out of iron mines , and al- most the only sort used in ...
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... metal when it came to con- tract by cooling . The enameller's furnace is square , and built of bricks bedded in an earth proper for the purpose . It may be considered as con- sisting of two parts , the lower part which receives a muffle ...
... metal when it came to con- tract by cooling . The enameller's furnace is square , and built of bricks bedded in an earth proper for the purpose . It may be considered as con- sisting of two parts , the lower part which receives a muffle ...
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... metal is used , the common practice is to apply a coating of opaque white enamel , and upon this other colours which are more fusible than the white . A good effect is produced in toys by leaving part of the gold bare . For this purpose ...
... metal is used , the common practice is to apply a coating of opaque white enamel , and upon this other colours which are more fusible than the white . A good effect is produced in toys by leaving part of the gold bare . For this purpose ...
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... metal , and that of gold , should be combined . Violet is likewise obtained from the pur- ple oxide of gold . This colour proceeds from having a greater quantity of lead in the flux , and it is nearly of the same tint , whether crude or ...
... metal , and that of gold , should be combined . Violet is likewise obtained from the pur- ple oxide of gold . This colour proceeds from having a greater quantity of lead in the flux , and it is nearly of the same tint , whether crude or ...
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... metal in various ways , and never obtained any grounds but a slight obscure yellow , and very uncertain in its quality . Concerning the blacks . Black colours are the most difficult to be obtained very beautiful . There is no me ...
... metal in various ways , and never obtained any grounds but a slight obscure yellow , and very uncertain in its quality . Concerning the blacks . Black colours are the most difficult to be obtained very beautiful . There is no me ...
Términos y frases comunes
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