Report of the ... and ... Meetings of the British Association for the Advancement of Science, Volume 37, Part 1867

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Page xvii - To give a stronger impulse and a more systematic direction to scientific inquiry, — to promote the intercourse of those who cultivate Science in different parts of the British Empire, with one another and with foreign philosophers, — to obtain a more general attention to the objects of Science, and a removal of any disadvantages of a public kind which impede its progress.
Page 465 - ... expedient that customs duties should be allowed to be levied by metric weight and measure, as well as by imperial weight and measure ; that the use of the metric system, concurrently with the imperial system, should be adopted by other public departments, especially the Post Office, and in the publication of the principal results of the statistics of the Board of Trade, as well as for the admeasurement and registration of the tonnage of shipping ; (6.) And that mural standards of the metric system,...
Page 189 - MacAndrew, Report on the Marine Testaceous Mollusca of the North-east Atlantic and Neighbouring Seas, and the physical conditions affecting their development...
Page 156 - The piers are 60 feet in height, from the bed of the river to the top of the parapet, and 24 feet in width.
Page 35 - ... and to fully half as much as might be expected from as high a course of farming as the soil and the climate with which we have to deal would justify us in adopting. It is remarkable too that, whilst the quality of this natural produce, as indicated by the relation of corn to straw, and the weight per bushel of the corn, varied year by year according to season, yet the characters of the crops grown by very various and, in some cases, rather high manures, were for each season somewhat similar to...
Page 488 - ... above or below its level ; so that there is as little obliquity as possible in the reflection, and the line traversed by the image on the screen during the deflection is, as nearly as may be, straight. The distance of the lamp and screen from the mirror is adjusted so as to give as perfect an image as possible of a fine wire which is stretched vertically in the plane of the screen across the aperture through which the lamp shines on the mirror; and with Mr Becker's mirrors I find it easy to read...
Page 24 - Committee experiments have lately been made at Kew Observatory, with the view of ascertaining to what extent an aneroid may be considered as a reliable instrument when exposed to considerable changes of pressure, such as occur in mountain ascents. In order to make these experiments, a large receiver had attached to it a standard barometer, of which the accuracy had been previously ascertained. By means of an air-pump, the aneroids, when placed in this receiver, might be subjected to any pressure,...
Page 162 - I have applied to the first houses for the specimens experimented upon, and judging from the results of these experiments, I venture to hope that new and important data have been obtained, which may safely be relied upon in the selection of the material for the different forms of construction. For several years past, attempts have been made to substitute steel for iron, on account of its superior tenacity in the construction of ships, boilers, bridges, &c.
Page 9 - In all stereoscopes there is an optical arrangement by which the right eye sees an image of one picture, and the left eye that of another. These images ought to be apparently in the same place and at the distance of most distinct vision. In ordinary stereoscopes these images are virtual, and the observer has to place his two eyes near two apertures, and be sees the united images, as it were, behind the optical apparatus.
Page 9 - ... of the. other picture formed by the other lens in the same place. The united images look like a real object in the air, close to the large lens. This image may be magnified or diminished at pleasure by sliding the piece containing the two lenses nearer to, or further from, the pictures.

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