Mackenzie's five thousand receipts in all the useful and domestic artsTroutman & Hayes, 1853 - 456 من الصفحات |
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الصفحة 5
... copper ores , rather slags or vitrescent stones , than calcareous earth . Humid assay of metallic ores . The mode of assaying ores for their particular metals by the dry way , is deficient so far as relates to pointing out the different ...
... copper ores , rather slags or vitrescent stones , than calcareous earth . Humid assay of metallic ores . The mode of assaying ores for their particular metals by the dry way , is deficient so far as relates to pointing out the different ...
الصفحة 6
... copper or iron , it must be calcined in a red heat proportion of the ingredients may be as follows : - for an hour , and then digested in nitrous acid , viz . 1 assay quintal of the ore ; 1 of decrepitated which will take up the copper ...
... copper or iron , it must be calcined in a red heat proportion of the ingredients may be as follows : - for an hour , and then digested in nitrous acid , viz . 1 assay quintal of the ore ; 1 of decrepitated which will take up the copper ...
الصفحة 7
... copper , to refine which , equal parts of common salt and pitre are to be well mixed together . The black copper is brought into fusion , and a tea - spoonful of the flux is thrown upon it , which is repeated three or four times , when ...
... copper , to refine which , equal parts of common salt and pitre are to be well mixed together . The black copper is brought into fusion , and a tea - spoonful of the flux is thrown upon it , which is repeated three or four times , when ...
الصفحة 9
... copper , will be nearly as follows : Of silver From dwt . gr . dwt.gr. Requires from 11 6 to 11 0 12 to 19 18 to 9 0 5 to 8 to 9 12 to 13 8 6 to 7 12 13 to 14 6 18 to 6 0 14 to 15 3 0 to 1 12 1 12 to 0 18 0 to 16 0 to 20 its Times ...
... copper , will be nearly as follows : Of silver From dwt . gr . dwt.gr. Requires from 11 6 to 11 0 12 to 19 18 to 9 0 5 to 8 to 9 12 to 13 8 6 to 7 12 13 to 14 6 18 to 6 0 14 to 15 3 0 to 1 12 1 12 to 0 18 0 to 16 0 to 20 its Times ...
الصفحة 10
... copper : when fused , addpound of zinc : these metals will com- vine , forming an alloy of a reddish colour , but pos- essing more lustre than copper , and also greater durability . White tombac . When copper is combined with arsenic ...
... copper : when fused , addpound of zinc : these metals will com- vine , forming an alloy of a reddish colour , but pos- essing more lustre than copper , and also greater durability . White tombac . When copper is combined with arsenic ...
عبارات ومصطلحات مألوفة
acid alum antimony applied aqua fortis bark beer blue boil bottle brandy butter calcined cask clean cloth colour cool copal copper costive cover crop decoction dissolved distilled dose drachms dried dung eggs fermentation fire flour four fresh gallons gamboge glass grains green ground gum arabic half an ounce heat hive inches iron isinglass juice keep laudanum lemon let it stand lime linen linseed oil liquor litharge malt matrass melted milk mixed mixture nitrous acid nutmeg ounces painting piece pint plants pound powder prepared produce proper Prussian blue quantity quart quarter roots salt seed shades skin soap soft soil solution spirit of wine stir stone strain straw sufficient sugar sulphur Take taken tartar thick thin tint tion trees turpentine varnish vessel vinegar vitriol warm wash whole wood wort yeast yellow
مقاطع مشهورة
الصفحة 2 - States entitled an act for the encouragement of learning hy securing the copies of maps, charts and books to the author., and proprietors of such copies during the times therein mentioned, and also to an act entitled an act supplementary to an act, entitled an act for the encouragement of learning by securing the copies of maps, charts and books to the authors and proprietors of such copies during the times therein mentioned and extending the benefits thereof to the arts of designing, engraving and...
الصفحة 115 - Boil one pound of good flour, a quarter of a pound of brown sugar, and a little salt, in two gallons of water, for one hour. When milk-warm, bottle it, and cork it close. It will be fit for use in twenty-four hours.- One pint of this yeast will make eighteen pounds of bread.
الصفحة 2 - Co. of the said district, have deposited in this office the title of a book, the right whereof they claim as proprietors, in the words following, to wit : " Tadeuskund, the Last King of the Lenape. An Historical Tale." In conformity to the Act of the Congress of the United States...
الصفحة 373 - Provide pint or quart bottles, which must be perfectly clean, sweet and dry ; draw the milk from the cow into the bottles, and as they are filled, immediately cork them well up, and fasten the corks with pack-thread or wire. Then spread a little straw...
الصفحة 171 - ... a quarter of a pound of butter, a quarter of a pound of moist sugar, and a handful of caraway seeds.
الصفحة 16 - Put into an earthen mortar some Gold leaf, with a little honey, or thick gum-water ; and grind the mixture, till the Gold is reduced to extremely minute particles. When this is done, a little warm water will wash out the honey or gum, leaving the Gold behind in a pulverulent state.
الصفحة 68 - ... brush. A small rim is then made round the circumference, with a thin brass band rising a little above the level, and a similar rim round the margin of the central hole. The use of these is to confine the enamel when in fusion, and to keep the edges of the plate quite neat and even. The substance of the enamel is a fine white opaque glass ; this is bought in lump by the...
الصفحة 78 - Mordants not only render the dye permanent, but have also considerable influence on the colour produced. The same colouring matter produces very different dyes, according as the mordant is changed. Suppose, for instance, that the colouring matter...
الصفحة 15 - A little practice will enable the workman to judge of the heat. The tool is now to be pressed downwards on the gold leaf, which will, of course, be indented and show the figure imprinted on it. The next letter or stamp is now to be taken and stamped in like manner, and so on with the others; taking care to keep the letters in an even line with each other, like those in a book. By this operation the resin is melted; consequently the gold adheres to the leather. The superfluous gold may then be rubbed...
الصفحة 373 - Then spread a little straw at the bottom of a boiler, on which place bottles with straw between them, until the boiler contains a sufficient quantity. Fill it up with cold water; heat the water, and as soon as it begins to boil, draw the fire, and let the whole gradually cool. When quite cold, take out the bottles and pack them in saw-dust, in hampers, and stow them in the coolest part of the house.