Encyclop¿dia Britannica: Or, A Dictionary of Arts, Sciences, and Miscellaneous Literature, 2. köide,1. osaColin Macfarquhar, George Gleig A. Bell and C. Macfarquhar, 1801 |
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Page 8
... oxyd was re - diffolved of a red colour : the remaining part , which had a dark brown colour , was oxyd of iron . From the folution , by the addition of potash , a preci- pitate was formed , which was now reddifh . Having by this ...
... oxyd was re - diffolved of a red colour : the remaining part , which had a dark brown colour , was oxyd of iron . From the folution , by the addition of potash , a preci- pitate was formed , which was now reddifh . Having by this ...
Page 39
... oxyd which remains fufpended in the liquor , it will be fufficient to dip the cotton in the bath to catch the laft particle of the oxyd , and to restore to the liquor the transparency it has loft . The folution , then , which before had ...
... oxyd which remains fufpended in the liquor , it will be fufficient to dip the cotton in the bath to catch the laft particle of the oxyd , and to restore to the liquor the transparency it has loft . The folution , then , which before had ...
Page 40
... oxyd , which , combined with the red of madder , gives a moft brilliant purple , more or lefs dark accord- ing to the ftrength of the galling and of the ferrugi nous folution . It is very difficult to obtain an equal colour by this ...
... oxyd , which , combined with the red of madder , gives a moft brilliant purple , more or lefs dark accord- ing to the ftrength of the galling and of the ferrugi nous folution . It is very difficult to obtain an equal colour by this ...
Page 41
... oxyd of iron with the aftringent principle ; and then it is brought to the ftate of black oxyd , as has been obferved by Berthollet . It is poffible alfo to embrown thefe co- lours , and to give them a variety of tints , from the bright ...
... oxyd of iron with the aftringent principle ; and then it is brought to the ftate of black oxyd , as has been obferved by Berthollet . It is poffible alfo to embrown thefe co- lours , and to give them a variety of tints , from the bright ...
Page 129
... oxyd , and com bined with fulphur , are not magnetizable while remain ing in that flate . Moft ores require roasting , and a fort of cementation , in contact with inflammable fubftances . This matter is not well understood ; but it ...
... oxyd , and com bined with fulphur , are not magnetizable while remain ing in that flate . Moft ores require roasting , and a fort of cementation , in contact with inflammable fubftances . This matter is not well understood ; but it ...
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Common terms and phrases
acid alfo almoft alſo alumina analyfed antimony barytes becauſe borax cafe carbonat caufe cauſe colour compofed confequence confiderable confifts cryftallized curve defcribed difcovered diftance Encycl equal faid fame fays fcience fecond feems feven fhall fhew fhould fide filica filver fimilar fimple firft fituation fluid fmall foliated folution fome fometimes foon fouth fpecies fpecimen ftate ftill ftone ftrong fubftance fubject fuch fufficient fulphur fuppofed fupport furface GENUS grey Hardneſs himſelf Hornblende increaſe inftrument interfection itſelf Klaproth laft lefs lime Luftre machine magnet magnetifm meaſure metallic moft moſt motion muft muriatic acid muſt neceffary needle nitric acid north pole obferved occafion oppofite oxyd oxyd of iron pafs perfon philofophers poffible pofition pole prefent preffure prefs prifm purpoſe quantity raiſed reafon refiftance refpect ſmall SPECIES Texture thefe themſelves theſe thofe thoſe tion ufually uſed velocity whofe yellow
Popular passages
Page 287 - ... I will not do that which my conscience tells me is wrong, upon this occasion; to gain the huzzas of thousands, or the daily praise of all the papers which come from the press: I will not avoid doing what I think is right; though it should draw on me the whole artillery of libels; all that falsehood and malice can invent, or the credulity of a deluded populace can swallow. I can say, with a great magistrate, upon an occasion and under circumstances not unlike, "Ego hoc animo semper fui, ut invidiam...
Page 287 - I wish popularity ; but it is that popularity which follows not that which is run after ; it is that popularity which sooner or later never fails to do justice to the pursuit of noble ends by noble means. I will not do that which my conscience tells me is wrong upon this occasion to gain the huzzas of thousands, or the daily praise of all the papers which come from the press.
Page 111 - What would you have me retract? I thought your book an imposture; I think it an imposture still. For this opinion I have given my reasons to the public, which I here dare you to refute.
Page 36 - Italian, he fpoke and wrote with the greateft fluency and precifion ; and the German and Portuguefe were familiar to him. At an early period of life, his application to oriental literature commenced ; he...
Page 74 - I have observed among all nations, that the women ornament themselves more than the men ; that, wherever found, they are the same kind, civil, obliging, humane, tender beings; that they are ever inclined to be gay and cheerful, timorous and modest.
Page 396 - At first they could not be persuaded of the reality of the appearance ; but they soon became so thoroughly convinced, by the cliffs gradually appearing more elevated, and approaching nearer, as it were, that they pointed out, and named to me, the different places they had been accustomed to visit ; such as the Bay, the Old Head or Man, the Windmill, &c. at Boulogne ; St. Vallery, and other places on the coast of Picardy ; which they afterwards confirmed, when they viewed them through their telescopes.
Page 289 - His * references to expreflions which fell from him in the courfe of a debate, and his quotations from books, were fo faithful, that they might have been faid to have been repeated -verbatim. The purpofes to which he employed thefe amazing talents, were ftill more extraordinary : if it was the weak part of his opponent's arguments that he referred to, he was fure to expofe its fallacy, weaknefs, or abfurdity in the moft poignant fatire, or hold it up in the moft ridiculous point of view. If, on the...
Page 51 - From this interview I was fully convinced, that whatever difference there is between the Negro and European in the conformation of the nose and the colour of the skin, there is none in the genuine sympathies and characteristic feelings of our common nature.
Page 382 - The medicated tar above mentioned, as ufed in the foregoing experiments, was compofed of one quarter of an ounce of corrofive fublimate, reduced to fine powder, by beating with a wooden hammer, and then put into a three-pint earthen pipkin, with about a glafs full of gin, or otfier fpirit, ftirred well together, and the fublimate thus diffolved.
Page 110 - It would be easy to shew it if he had it; but whence could it be had? It is too long to be remembered, and the language formerly had nothing written.