Chemical Manipulation: Being Instructions to Students in Chemistry, on the Methods of Performing Experiments of Demonstration Or of Research, with Accuracy and Success

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Carey and Lea, 1831 - 689 páginas
 

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Página 68 - A solid immersed in a liquid is buoyed up by a force equal to the weight of the liquid displaced.
Página 71 - If on the contrary it weigh one grain and a fraction, it will be counterpoised by the heavy gold weight at the extremity, and one or more of the lighter ones placed in some other part of the beam. This beam...
Página 683 - The variety of topics is of course vast, and they are treated in a manner which is at once so full of information and so interesting, that the work, instead of being merely referred to, might be regularly perused with as much pleasure as profit.
Página 683 - Journal of Education. If the encouragement to the publishers should correspond with the testimony in favor of their enterprise, and the beautiful and faithful style of its execution, the hazard of the undertaking, bold as it was, will be well compensated ; and our libraries will be enriched by the most generally useful encyclopedic dictionary that has been offered to the readers of the English language.
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Página 682 - Encyclopaedias were too learned, scientific, and cumbrous, being usually elaborate treatises, requiring much study or previous acquaintance with the subject discussed. The conductors of the CONVERSATION LEXICON endeavored to select from every branch of knowledge what was necessary to a wellinformed mind, and to give popular views of the more abstruse branches of learning and science ; that their readers might not be incommoded, and deprived of pleasure or improvement, by ignorance of...
Página 71 - ... also a number of small rings of fine brass wire made in the manner first mentioned by Mr. Lewis, by appending a weight to the wire, and coiling it with the tension of that weight round a thicker brass wire in a close spiral, after which the extremity of the spiral being tied hard with waxed thread, I put the covered wire in a vice, and applying a sharp knife which is struck...
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