Philosophical MagazineTaylor & Francis, 1799 |
Részletek a könyvből
1 - 5 találat összesen 67 találatból.
14. oldal
... still the un- doubted preference . Its firmnefs and continuity enable it in the blast furnace to fupport and convey principle to the iron contained in a larger portion of ore , than charcoal made from fofter wood . The fame properties ...
... still the un- doubted preference . Its firmnefs and continuity enable it in the blast furnace to fupport and convey principle to the iron contained in a larger portion of ore , than charcoal made from fofter wood . The fame properties ...
41. oldal
... still increased by reading in Bergmann that the ruby fused with borax communicates to it a beautiful green 12. To obferve whether there are not daily formed different kinds of ftones in the places which are washed by the waters of the ...
... still increased by reading in Bergmann that the ruby fused with borax communicates to it a beautiful green 12. To obferve whether there are not daily formed different kinds of ftones in the places which are washed by the waters of the ...
48. oldal
... still mixed with a few particles of oxyd . The precipitate formed in the mo- ther water by the carbonat of potash was treated with a so- lution of cauftic potafh . By thefe means the alumine was diffolved , and the oxyd of chrome ...
... still mixed with a few particles of oxyd . The precipitate formed in the mo- ther water by the carbonat of potash was treated with a so- lution of cauftic potafh . By thefe means the alumine was diffolved , and the oxyd of chrome ...
58. oldal
... still farther , that the interior part only retained the natural colour , and that the wood was exceedingly close and com- pact . After this wood had been feveral times rubbed over with the oil or spirit of turpentine , it became harder ...
... still farther , that the interior part only retained the natural colour , and that the wood was exceedingly close and com- pact . After this wood had been feveral times rubbed over with the oil or spirit of turpentine , it became harder ...
75. oldal
... still farther fhattered . But as thefe reports were heard at a very great distance † , and as many which did not appear to be more remote , but nearer , have burst without any report ; a queftion arifes , whether we are to confider , as ...
... still farther fhattered . But as thefe reports were heard at a very great distance † , and as many which did not appear to be more remote , but nearer , have burst without any report ; a queftion arifes , whether we are to confider , as ...
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Gyakori szavak és kifejezések
acid affumed againſt alfo almoſt alſo atmoſphere becauſe cafe carbon carbonat carbonic acid caufe cauſe charcoal coaks coal colour confequence confiderable confifts crude iron DAVID MUSHET difcovered diffolved diſtance earth elephants employed exift experiments expofed expoſed fame fcrew fecond fecured feems feen ferve feveral fhall fhould fide fimilar firft firſt fituation fize fmall fnow folid folution fome fometimes foon ftate ftill ftone ftrata ftrong fubftances fubject fuch fufficient fulphur furface furrounded greateſt heat inches increaſe iron-ftone itſelf laft lefs Levant Company lime machine manner meaſure mercury metal mixture moft moſt mountains muft muriat muriatic acid muſt Naples yellow nature neceffary nitrous acid obferved occafion oxyd oxygen paffed Philofoph pit-coal plate poffeffing poffible pounds prefent procefs produced Profeffor purpoſe quantity refpecting refult Ruffia ſmall ſtate ſtone temperature thefe theſe thofe thoſe tion Turkey ufed uſed vapour veffels weight wood
Népszerű szakaszok
305. oldal - A quantity of frefli rofes (for example, forty pounds,) are put in a ftill with fixty pounds of •water, the rofes being left as they are with their calyxes, but with the ftems cut clofe. The mafs is then well mixed together with the hands, and a gentle fire is made under the ftill. When the water begins to grow hot, and fumes to rife, the cap of the ftill is put on, and the pipe fixed : the chinks are then well luted with pafte, and cold water put on the refrigeratory at the top.
187. oldal - It would have been impossible for any of these trees and shrubs to vegetate so near the sea, and below the common level of its water : the waves would cover such tracts of land, and hinder any vegetation. We cannot conceive that the surface of the ocean has ever been lower than it now is ; on the contrary, we are led by...
264. oldal - Pen-knife sharpen'd as keen as a Razor, I cut a piece of it off, and thereby left the surface of it exceeding smooth, then examining it very diligently with a Microscope, me thought I could perceive it to appear a little porous ; but I could not so plainly distinguish them, as to be sure that they were pores, much...
90. oldal - There is nothing in gypfum injurious, if it be free from lime ; it will foon become very dry and light, and the limb may be bathed with fpirits, which will penetrate through the covering. Spirits may be ufed inftead of water, or mixed with it (or vinegar) at the firft making of the plafter.
86. oldal - Virgil calls this fourth day a very sure prophet. If on that day the horns of the moon are clear and well defined, good weather may be expected ; but if they are dull, and not clearly marked on the edges, it is a sign that bad weather will ensue. When the weather remains unchanged on the fourth, fifth, and...
236. oldal - A want, or too great a quantity of dew, being a mark of a strong evaporation, announces rain ; the case is the same with thick, white, hoar frost, which is only dew congealed. J2. The winds which begin to blow in the day time, are much stronger, afld eiv...
136. oldal - This bird, after it was caught, was shut up in a large hen-coop ; and the next morning M. Cronstedt found a young partridge lying dead before the door of the coop.
330. oldal - Fifthly, that the dissolution of sulphureous bodies is made by a substance inherent, and mixt with the Air, that is like, if not the very same, with that which is fixt in Salt-peter, which by multitudes of Experiments that may be made with Saltpeter, will, I think, most evidently be demonstrated.
330. oldal - ... till it be precipitated. Seventhly, That as there is one part that is dissoluble by the Air, so are there other parts with which the parts of the Air mixing and uniting, do make a Coagulum, or precipitation, as one may call it, which causes it to be separated from the Air, but this precipitate is...
329. oldal - Thirdly, that this action of dissolution, produces or generates a very great heat, and that which we call Fire...