Notices of the Proceedings, 3권 |
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acid ammonia amount aniline animal architects architecture Athenæum atmosphere atoms axes axis body carbon carbonic acid Cetacea Chair changes character chemical action chimpanzee colour compounds copper crystal degree direction earth effect elasticity electric electrometer exhibited existence experiments fact Faraday feet flame force fossil Franklin Institute Friday galvanometer gases Geological glacier gorilla Gothic Gothic architecture heat hydrochloric acid hydrogen inches iron John JOHN BARLOW JOHN TYNDALL Journal of Gas-Lighting Lectures less light magnet mass mechanical Messrs.-London Journal metal molecules motion nature observed obtained octahedron organic oxide oxygen pass phenomena plates POLE portion position present pressure produced Professor Quadrumana quantity rays remarkable Royal Institution Royal-Proceedings salt SIR HENRY HOLLAND Society Society-Proceedings sodium speaker species spectrum structure substance sulphur surface temperature tension tion tube vapour Vice-President WEEKLY EVENING MEETING whilst WILLIAM POLE wire
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214 페이지 - ... varies inversely as the square of the distance of the planet from the sun. The...
110 페이지 - ... of any gradual diminution of the size — of such species, but is the result of circumstances which may be illustrated by the fable of the " Oak and the Reed; " the smaller and feebler animals have bent and accommodated themselves to changes to which the larger species have succumbed.
419 페이지 - The History of Modern Music, a Course of Lectures delivered at the Royal Institution of Great Britain. By John Hullah.
112 페이지 - Devonian aeons, because the explored parts of such strata have been deposited from an ocean, and the chance of finding a terrestrial and air-breathing creature's remains in oceanic deposits is very remote. But, in the present state of the warm-blooded, air-breathing, viviparous class, no genera and species are represented by such numerous and...
534 페이지 - Led by his own beautiful researches, and quite independent: of Mayer, Mr. Joule published his first Paper on the 'Mechanical Value of Heat,' in 1843 ; but in 1842 Mayer had actually calculated the mechanical equivalent of heat from data which a man of rare originality alone could Him to account. From the velocity of sound in air Mayer determined the mechanical equivalent of heat. In 1845 he published his Memoir on ' Organic Motion,' and applied the mechanical theory of heat in the most fearless and...
110 페이지 - ... the species. If a dry season be gradually prolonged, the large mammal will suffer from the drought sooner than the small one; if such alteration of climate affect the quantity of vegetable food, the bulky herbivore will first feel the effects of stinted nourishment; if new enemies be introduced, the large and conspicuous animal will fall a prey while the smaller kinds conceal themselves and escape.
152 페이지 - Again, certain well marked forms of living beings have existed through enormous epochs, surviving not only the changes of physical conditions, but persisting comparatively unaltered, while other forms of life have appeared and disappeared. Such forms may be termed " persistent types " of life ; and examples of them are abundant enough in both the animal and the vegetable worlds.
162 페이지 - By proper mechanical arrangemi-ills this cylinder could be revolved, and the part which was at one instant within, rapidly brought to the outside, and observed by the audience. As the cylinder could be made to revolve 300 times in a second, and as the twentieth part of a revolution was enough to bring a sufficient portion of the cylinder to the outside, it is evident that a phosphorescent effect which would last only the l-3000th or even the l-6000th of a second might be made apparent.
200 페이지 - Ah my God, What might I not have made of thy fair world, Had I but loved thy highest creature here ? It was my duty to have loved the highest: It surely was my profit had I known : It would have been my pleasure had I seen. We needs must love the highest when we see it, Not Lancelot, nor another.
534 페이지 - ... combustion was sacrificed by the sun to form that bit of cotton. But we cannot stop at vegetable life, for this is the source, mediate or immediate, of all animal life. The sun severs the carbon from its oxygen ; the animal consumes the vegetable thus formed, and in its arteries a reunion of the severed elements takes place, and produces animal heat.