Journal of Science and the Arts, Zväzok 51818 |
Vyhľadávanie v obsahu knihy
Výsledky 1 - 5 z 45.
Strana xv
... plates , and the use of inks without oil or any ma- terial which may discolour the white of the paper , as proposed by Mr. Savage , all possess important advantages . Mr. Didot has likewise materially improved and simplified the process ...
... plates , and the use of inks without oil or any ma- terial which may discolour the white of the paper , as proposed by Mr. Savage , all possess important advantages . Mr. Didot has likewise materially improved and simplified the process ...
Strana 28
... plates ; and very frequently rich in iron cinnamon - stone . Garnet , traces of the ruby , and adularia , were the only minerals which I observed ; but , I have no doubt , more minute exami- nation would have detected others , and ...
... plates ; and very frequently rich in iron cinnamon - stone . Garnet , traces of the ruby , and adularia , were the only minerals which I observed ; but , I have no doubt , more minute exami- nation would have detected others , and ...
Strana 66
... plate of iron , which , when immersed in their solution , throws down every thing except iron . This precipitate is digested in weak nitric acid , which dissolves the lead and copper ; then in nitro - muriatic acid , which takes up the ...
... plate of iron , which , when immersed in their solution , throws down every thing except iron . This precipitate is digested in weak nitric acid , which dissolves the lead and copper ; then in nitro - muriatic acid , which takes up the ...
Strana 69
... plate of clean iron is immersed in them . The ores of lead met with in the cabinet of the mineralo- gist are very numerous ; but those which are really useful as sources of the metal are few . Those ores of lead which are not of a ...
... plate of clean iron is immersed in them . The ores of lead met with in the cabinet of the mineralo- gist are very numerous ; but those which are really useful as sources of the metal are few . Those ores of lead which are not of a ...
Strana 70
... plate of zinc . Phosphate of lead , or green lead ore is crystallized in six - sided prisms , and short diverging acicular crystals . Before the blow - pipe it melts into a polyhedral globule . Yorkshire , Scot- land , Germany , and ...
... plate of zinc . Phosphate of lead , or green lead ore is crystallized in six - sided prisms , and short diverging acicular crystals . Before the blow - pipe it melts into a polyhedral globule . Yorkshire , Scot- land , Germany , and ...
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Časté výrazy a frázy
Adam's Peak alkali ammonia ancient angle appears arts ascertained atmosphere azote BAMBUSA blue bodies carbonate chloride Chromic Oxide chymical chymistry cinders circle coast colours consists containing crystals Cyperaceae degree DISPERIS distance Ditto earth effect equal exhibited experiments feet flame flax given number glass green Greenland heat Hill and Bundy's horizontal hornblend hydrogen hydrometer inches instrument iron island kaleidoscope lava length light lime liquid machine magnetic means measure meridian metal muriatic muriatic acid nature nearly needle Niger nitric acid object observed obtained oxide oxygen paper particles passing pendulum plates platinum potash produced proportion quantity quicksilver rays reflected reflectors result river rock Royal salt sciences SCIRPUS seen solution species specific gravity stone substance supposed surface tangent screw telescope temperature thermometer tion tube vegetable whole wire Zaire
Populárne pasáže
Strana xxii - Hudson's Bay Company, and his attempt to establish a Colony on the Red River; with a Detailed Account of his Lordship's Military Expedition to, and Subsequent Proceedings at Fort William, in Upper Canada.
Strana 324 - B. placed the fluids in a trough formed by two plates of glass cemented together at an angle. The eye being necessarily placed at one end, some of the cement which had been pressed through between the plates appeared to be arranged into a regular figure. The symmetry of this figure being very remarkable, Dr B.
Strana 332 - ... instrument is directed, if it only be in its proper place the effect just described is sure to take place, and with an endless variety. In this respect, the kaleidoscope appears to be quite singular among optical instruments. Neither the instrument of Bradley, nor the experiment or theorem in Wood's book, have any resemblance to this ; they go no further than the multiplication of the figure.
Strana 9 - ... withhold their protection from the fine arts, and debar themselves of the pleasures derived from works of literature and taste. Strange and novel as the assertion may appear,, it is no less true, that .the advantages and enjoyments which these studies and pursuits afford, are not only obtained without any expense to the country in which they are encouraged, but, that they actually repay, in wealth and emolument, much more than they require for their support. To •what are all the astonishing...
Strana 294 - The notion that these bodies come from the moon is, when considered, neither absurd nor impossible. It is quite true, that the quiet way in which they visit us is against such an origin ; it seems, however, that any power which would move a body 6000 feet in a second, that is, about three times the velocity of a cannon ball, would throw it from the sphere of the moon's attraction into that of our earth.
Strana 161 - Padron, it is stated that the river put on a majestic appearance, that the scenery was beautiful, and not inferior to any on the banks of the Thames ; and the natives of this part all agreed in stating, that they knew of no impediment to the continued navigation of the river; that the only obstruction in the north-eastern branch, was a single ledge of rocks, forming a kind of rapid, over which however canoes were able to pass.
Strana 294 - While we are considering the possibility of these considerations it may be remembered, that in the great laboratory of the atmosphere, chemical changes may happen, attended by the production of iron and other metals ; that at all events such a circumstance is within the range of possible occurrences ; and that the meteoric bodies which thus salute the...
Strana 182 - It is generally admitted that, for the last four hundred years, an extensive portion of the eastern coast of Old Greenland has been shut up by an impenetrable barrier of ice, and, with it, the ill-fated Norwegian or Danish colonies, which had been established there for more than an equal length of...
Strana 168 - The length of the pendulum vibrating seconds in the latitude of London forms the standard of the British measure of extension.
Strana 394 - The || Travels || of || Marco Polo, || a Venetian, || in the Thirteenth Century : || being a || Description, by that early traveller, || of || remarkable places and things, || in || the || Eastern Parts of the World. || Translated from the Italian, || with || Notes, || by William Marsden, FRS, &c.