Proceedings. Biological Sciences

Proceedings. Biological Sciences

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1865 edition. Excerpt: ...two obvious misprints, that he has thus calculated m = 5-6295. B-=-(1+0 O48. -), giving wm+20-8333. m--117-281. n=0, for which, mn+21m--Wn=0 is a sufficiently close approximation, and represents the mean variation very fairly, after the first 5000 feet of ascent. t Mr. Glaisher has laid down these in the Proceedings of the British Meteorological Society, vol. i. (19 Nov. 1862) plate 13, with which I have compared the theoretical hyperbola. These comparisons have been obtained by calculating the height attained for each inch of depression of the barometer, from the 1st to the 16th, taking for the bottom may therefore be considered as the normal alteration of temperature. In order to secure simultaneous observations at both stations for each section, it would be necessary to have two ascending parties, one for each variable station, each of which should be able to signal to the other. A stationary observer at the lowest station would serve as a check on the other two. This method introduces many practical difficulties, but the reduction of the observations is rendered very easy by Tables I. and II. The great importance of thus calculating heights by sections will be rendered evident by the following examples. Taking the data in the Ann. Metior. de F. for 1852, p. 70, we have for Geneva as the lower and St. Bernard as the upper station, L 46, B' 0-72643 A' 8-97 Ht 408, V 0-56364. a'-1-89 h1 2463. Again, for St. Bernard as the lower and Mont Blanc as the upper station, B' 0-56803 A' 7'6 Ht 2463, V 0-42429 a'-9-1 A, 47877; which has been calculated as Ex. 2 above. But taking the data from the Annuaire du B. des L., 1865, p. 324, we have for Geneva as the lower and Mont Blanc as the upper station, B 729-65 M' 18-6 A' 19-3 Ht 408, b 424-05 m' more

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  • Paperback | 254 pages
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  • English
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  • 1236610318
  • 9781236610317