Nature and man in America / by N.S. Shaler.

  • Shaler, Nathaniel Southgate, 1841-1906.
Date:
1892
Catalogue details

Licence: Public Domain Mark

Credit: Nature and man in America / by N.S. Shaler. Source: Wellcome Collection.

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    PAGE vance in Development of the Continent from Cambrian Time to the present Day. — Successive Positions of Shore-line. — Varia- tions in the Form of Continent; Subsidence during Glacial Period in Northern Portion; corresponding Uplift in Southern Portion. — Evidence from the West Indies Islands ; from Florida Rocks. — Summary 66 CHAPTER IV. The Nature of Faunae and Florae. — Migration of these Organic Armies. — Individualization of Continents. — Condition of Faunae and Florae in Cambrian Time; in Successive Periods. — Effect of Growth of Mountains; Effect of Elevation at Beginning of Coal- measures. — Croll’s Hypothesis of Climate Change. — Conditions of Continental Growth in Europe. — Influence of Geographic Con- ditions on the Development of Life. — Conditions of last Glacial Period. — Relation of Continents to Marine Currents. — Uniform Growth of the Earth’s Features. — Uniformity in Condition of Atmosphere. — Climatal Variations ; Delicacy of Adjustment thereof; its Measure.—Effect of Variations of Gulf Stream on Extension of Ice. — Review and Conclusion 108 CHAPTER V. Dependence of Man on Environment; Increase of this Dependence with the Advance of Civilization. — Relations of our modern States to the Conditions of the Earth. — Advance in the Sj’mpa- thetic Motive. — Comparison of Europe and North America.— Discussion of the separate Areas of Europe. — Isolation of Great Britain; its Causes. — Isolated Areas of Asia. — Cradle-land of the Aryan People. — Permanence of Race Qualities. — Race Quali- ties in Africa; in Australia; in America. — Geographic Conditions of North America; Review of the several Fields of this Conti- nent.— Effect of Physical Conditions of North America on native Indians 547 CHAPTER VI. Geographic Relations of North America; Variations of these Rela- tions in former Geologic Periods. — Peculiar Fitness of North America for the Nurture of Plant Life; Inferior Position of its Animals. — Contributions of North America to the Domesticated Animals and Plants of Civilization. — Relative Measure of Relation