... is, moreover, well known. It was, therefore, that, after a careful study of these ancient rocks, I declared in May, 1858, that a great mass of evidence " points to the existence of organic life, even during the Laurentian, or socalled azoic period. The American Journal of Science and Arts - Página 4321858Vista completa - Acerca de este libro
| Geological Survey of Canada, Sir John William Dawson - 1871 - 152 páginas
...had already in the Amer. Jour. Science for May, 1855 (XXV, 436) asserted that " the presence of iron ores, not less than that of graphite points to the...during the Laurentian or so-called Azoic period." The same argument is maintained by Dr. Hunt in the Quar. Jour. Geol. Soc. for 1859 (p. 493) and the Amer.... | |
| Geological Survey of Canada, Sir John William Dawson - 1871 - 210 páginas
...had already in the Amer. Jour. Science for May, 1855 (XXV, 43C) asserted that " the presence of iron ores, not less than that of graphite points to the...existence of organic life even during the Laurentian or so-culled Azoic period." The same argument is maintained by Dr. Hunt in the tJuar. Jour. (Jfol. Soc.... | |
| American Association for the Advancement of Science - 1872 - 508 páginas
...after a careful study of these ancient rocks, I declared in May, 1858, that a great mass of evidence " points to the existence of organic life, even during the Laurentian, or socalled azoic period." * This prediction was soon verified in the discovery of the Eozoon Canadense, of Dawson, the organic... | |
| 1872 - 876 páginas
...after a careful study of these ancient rocks, I declared in May, 1858, that a great mass of evidence "points to the existence of organic life, even during the Laurentian or socalled azoic period." f This prediction was soon verified in the discovery of the Eozoon Canadense, of Dawson, the organic... | |
| Alpheus Spring Packard - 1873 - 256 páginas
...terrestrial we have no means of knowing." In 1855, Dr. T. Sterry Hunt asserted " that the presence of iron ores, not less than that of graphite, points to the...during the Laurentian or so-called Azoic period." In 1861 he went farther and stated his belief in " the existence of an abundant vegetation during the... | |
| Alpheus Spring Packard - 1873 - 254 páginas
...terrestrial we have no means of knowing." In 1S55, Dr. T. Sterry Hunt asserted " that the presence of iron ores, not less than that of graphite, points to the...existence of organic life even during the Laurentian or ao-called Azoic period." In 1861 he went farther and stated his belief in " the existence of an abundant... | |
| Thomas Sterry Hunt - 1875 - 524 páginas
...after a careful study of these ancient rocks, I declared in May, 1858, that a great mass of evidence "points to the existence of organic life, even during the Laurentian or so-called azoic period." J This prediction was soon verified in the discovery of the Eozoon Cunadense of Dawson, the organic... | |
| Thomas Sterry Hunt - 1875 - 530 páginas
...after a careful study of these ancient rocks, I declared in May, 1858, that a great mass of evidence "points to the existence of organic life, even during the Laurentian or so-called azoic period." f This prediction was soon verified in the discovery of the Eozoim Canadense of Dawson, the organic... | |
| Geological Survey of Pennsylvania - 1878 - 292 páginas
...in the same jonrnal for May, 1858, II, xxv. 426) where it was declared that a great mass of evidence "points to the existence of organic life even during the Laurentian or so-called Azoic period." See also Chemical and Geological Essays, pages 13 and 302. § 327. It was in the autumn of 1858 that... | |
| Geological Survey of Pennsylvania - 1878 - 292 páginas
...in the same journal for May, 1858, II, xxv. 426) where it was declared that a great mass of evidence "points to the existence of organic life even during the Laurentian or so-called Azoic period." See also Chemical and Geological Essays, pages 13 and 302. § 327. It was in the autumn of 1858 that... | |
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