Monthly Notices of the Royal Astronomical Society, Volumes 31 à 32

Couverture
Priestley and Weale, 1871
 

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Page 197 - B . sin c = sin b . sin C cos a = cos b . cos c + sin b . sin c cos b = cos a . cos c + sin a . sin c cos A cos B cos c = cos a . cos b + sin a . sin b . cos C ..2), cotg b . sin c = cos G.
Page 260 - Lenarto has no doubt come from such an atmosphere, in which hydrogen greatly prevailed. This meteorite may be looked upon as holding imprisoned within it, and bearing to us, the hydrogen of the stars.
Page 107 - the most worthless book of a bygone day is a record worthy of preservation; like a telescopic star, its obscurity may render it unavailable for most purposes; but it serves, in hands which know how to use it, to determine the places of more important bodies.
Page 121 - ... in this point of view. Every well-determined star, from the moment its place is registered, becomes to the astronomer, the geographer, the navigator, the surveyor, a point of departure which can never deceive or fail him, the same for ever and in all places, of a delicacy so extreme as to be a test for every instrument yet invented by man, yet equally adapted for the most ordinary purposes ; as available for regulating a town clock, as for conducting a navy to the Indies ; as effective for mapping...
Page 107 - Book of Almanacs. With an Index of Reference by which the Almanac may be found for every Year, whether in Old Style or New, from any Epoch, Ancient or Modern, up to AD 2000. With means of finding the Day of New or Full Moon, from BC 2000 to AD 2000.
Page 122 - When once its place has been thoroughly ascertained and carefully recorded, the brazen circle with which that useful work was done may moulder, the marble pillar totter on its base, and the astronomer himself survive only in the gratitude of his posterity : but the record remains, and transfuses all its own exactness into every determination which takes it for a groundwork...
Page 125 - I cannot otherwise understand alternations of heat and cold, so extensive as at one period to have clothed high northern latitudes with a more than tropical luxuriance of vegetation, at another to have buried vast tracts of middle Europe, now enjoying a genial climate and smiling with fertility, under a glacier crust of enormous thickness. Such changes seem to point to some cause more powerful than the mere local distribution of land and water (according to Mr. Lyell's views) can well be supposed...
Page 155 - I was able to determine that the fundamental form, the skeleton or trunk, and principal branches, were faithfully reproduced or indicated in the images, their extent being, however, greatest in the red, and diminishing successively in the other colours down to the line G, on which the trunk alone was reproduced. In none of the prominences thus compared was I able to distinguish in the yellow image Ds parts or branches not contained in the red image C.
Page 370 - A CATALOGUE OF MAPS OF THE BRITISH POSSESSIONS IN INDIA. AND OTHER PARTS OF ASIA. Published by Order of Her Majesty's Secretary of State for India in Council. Royal 8vo, sewed, is. A continuation of the above, sewed, price 6d., is now ready. ^- Messrs. Henry S. King &

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