Nature Volume 12

Nature Volume 12

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1875 edition. Excerpt: ...of human remains in conjunction with the mastodon.--On the rate of growth of corals, by Prof. Joseph Le Contc. Examining a grove of madrepores he noticed that all the prongs grew to the same level, which at the time were very near the surface; and that all of them were dead at the tips for about three inches. The varying level of the ocean at the place is known from the Coast Survey Report, and as it seems that during the high water the madrepores grow up, the living points of the madrepores grow up till the descending waterlevel exposes and kills them down to a certain level; with the rise of the mean level again new points start upwards. The annual growth, calculated from the known rise and fall of water level, is from 3J to 4 inches per annum.--Results of dredging expeditions off the New England Coast in 1874, by A. E. Verrill. Lists of species are given.--Examination of gases from the meteorite of Feb. 12, 1875, by A. W. Wright.--Discovery of two new asteroids, 144 and 145, by C. H. Peters. The diameter of 144 is as the 10th, and 145 as n-5.--The discovery of a method of obtaining thermographs of the isothermal lines of the solar disc, by Alfred M. Mayer. We reprint the paper this week. Jahrbiicher fiir wissenscha/tliche Botanik. Herausgegeben von Dr. N. Pringsheim. Band x. Heft. 1. (Leipzig, 1875).--In the first part of the tenth volume of Pringsheim s well-known Jahrbuch we have three papers all of very considerable importance. The first is a translation of Count Francesco Castracane's paper on the Diatomacea: of the Carboniferous period. Ashes of coal from Liverpool yielded, on microscopic examination, several speciesof Diatomacea;. The chief forms identified by Count Castracane all belong to fresh-water genera and species, more

Product details

  • Paperback | 758 pages
  • 189 x 246 x 38mm | 1,329g
  • United States
  • English
  • black & white illustrations
  • 1236936906
  • 9781236936905