The American Journal of Science and ArtsS. Converse, 1848 |
Contents
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Common terms and phrases
action alcohol alumina ammonia analogy animal appears astronomers baryta beds body boiling carbonic acid character chemical chlorine chromic acid color comet computed containing cordierite crystals decomposed density deposits Devonian dissolved distance electricity ether Europe existence experiments fact flame fluid formula fossils French feet frog gallic acid genera genus geological give graphite gutta heat hydrochloric acid hydrogen inches iron John Herschel Journal light lime limestone liquid magnesia magnetic mass matter miles mineral minute nature nearly Neptune nitric nitric acid nitrogen observations obtained orbit oxyd oxygen particles phenomena planet plates portion potash precipitate present prism produced Prof Professor protoxyd pulse quantity remarkable rocks salt sandstone SECOND SERIES separated silicates Silurian Silurian system soda solution species specimens spectrum stars strata substance sulphuret sulphuric acid surface temperature tion tube Uranus velocity Verrier wire York
Popular passages
Page 322 - Neither are these only similitudes, as men of narrow observation may conceive them to be, but the same footsteps of nature, treading or printing upon several subjects or matters.
Page 140 - All thai is received under the name of precipitated sulphur — or "lac sulphur," as the merchants commonly term it — except when it is expressly ordered, from an honorable manufacturer, contains from 80 to 95 per cent. of sulphate of lime. Opium is often invoiced at one-third the value of good quality, and is found, upon examination, not to be worth even that. The same may be said of scammony. Most of the foreign extracts are not what they profess to be, and cannot be relied upon in the treatment...
Page 79 - ... is directly as the square root of the pressure, and inversely as the square root of the density...
Page 165 - ... imagination the appearance of Saturn's ring when nearly closed, and seen through a telescope of moderate power. This ray, from its superior breadth, must necessarily come from that pale tawny light which invests the bright part of the flame. This, which is readily seen when the flame is large, envelops the middle and upper parts, but cannot so easily be detected low down. It is to be attributed to the carbonic acid and steam that have risen at a high temperature in the burning shell, and are...
Page 93 - Mr. Mason, a young and ardent astronomer, a native of the United States of America, whose premature death is the more to be regretted as he was (so far as I am aware) the only other recent observer who has given himself with the assiduity which the subject requires, to the exact delineation of Nebula;, and whose figures I find at all satisfactory.'^ He also prepared a college treatise on Practical Astronomy.
Page 343 - Supposed grounds for a Theory. 28. The grounds upon which I venture to advance a theory, are as follows: — "The existence of two heterogeneous polar forces acting in opposite directions, and necessarily connate and co-existent ; yet capable of reciprocal neutralization, agreeably to the authority of Faraday and others: the polarity of matter in general, as displayed during the...
Page 87 - ... and sharpness of vision, is such, that hardly any limit is set to magnifying power but what the aberrations of the specula necessitate.
Page 343 - Mairan, as being consequent to making and breaking a galvanic circuit through a conductor, or magnetizing or demagnetizing by means of surrounding galvanized coils. Proofs of the existence of an enormous quantity of Imponderable Matter in Metals. 29. It has been most sagaciously pointed out by Faraday, that...
Page 147 - An American Dictionary of the English language ; containing the whole vocabulary of the first edition in two volumes quarto; the entire corrections and improvements of the second edition in two volumes royal...
Page 147 - To which are prefixed, an introductory dissertation on the Origin, History and connection of the languages of Western Asia and of Europe, and a concise Grammar of the English language.