Loading your reading…

Soils, their formation, properties, composition, and relations to climate and plant growth in the humid and arid regions — John Shaqi

Soils, their formation, properties, composition, and relations to climate and plant growth in the humid and arid regionsHilgard, Eugene W. (Eugene Woldemar)

Science

Soils, their formation, properties, composition, and relations to climate and plant growth in the humid and arid regions

Name: Soils, their formation, properties, composition, and relations to climate and plant growth in the humid and arid regions
Author: Hilgard, Eugene W. (Eugene Woldemar)

Hilgard, Eugene W. (Eugene Woldemar)

Soils

3. CHEMISTRY OF SOILS.
      Chapter XVIII. Physico-Chemical Investigation of Soils in
                     Relation to Crop Production.
         “      XIX. Analysis of Virgin Soils by Extraction with
                     Strong Acids, and its Interpretation.
         “       XX. Soils of Arid and Humid Regions.
         “      XXI. Soils of Arid and Humid Regions continued.
         “     XXII. Alkali Soils, their Nature and Composition.
         “    XXIII. Utilization and Reclamation of Alkali Lands.

    4. SOILS AND NATIVE VEGETATION.
      Chapter XXIV.  Recognition of the Character of Soils from their
                     Native Vegetation. Mississippi.
         “     XXV.  Recognition of the Character of Soils from their
                     Native Vegetation. United States at large, Europe.
         “    XXVI.  Vegetation of Saline and Alkali Lands.




TABLE OF CONTENTS.


    PREFACE xiii

    INTRODUCTION, xxiii.—Definition of Soils, xxiii.—Elements
        Constituting the Earth’s Crust, xxiii.—Average Quantitative
        Composition of the Earth’s Crust, xxiii.—Clarke’s Table,
        xxiv.—Oxids Constitute Earth’s Crust, xxiv.—Elements
        Important to Agriculture; Table, xxv.—The Volatile Part of
        Plants, xxvi.

                              CHAPTER I.
    AGENCIES OF SOIL FORMATION, 1.—1. _Physical Agencies_,
        1.—Effects of Heat and Cold on Rocks, 1.—Unequal
        Expansion of Crystals, 2.—Cleavage of Rocks, 3.—Effects
        of Freezing Water, 3.—Glaciers; Figure, 3.—Glacier Flour
        and Mud, 4.—“Green” and “White” Rivers, 4.—Moraines,
        5.—Action of Flowing Water, 5.—Enormous Result of
        Corrasion and Denudation, 6.—Effects of Winds, 8.—Dunes,
        8.—Sand and Dust Storms in Deserts, Continental
        Plateaus and Plains, 8.—Loess of China, 9.—Migration
        of Gobi Lakes, 9.—_Classification of Soils_, 10.—Their
        Physical Constituents, 10.—Sedentary or Residual Soils,
        11.—Colluvial Soils, 12.—Alluvial Soils. Diagram,
        12.—Character of these Soil Classes, 13.—Richness of
        Flood-plain and Delta Lands, 14.—Lowering of the Land
        Surface by Soil Formation, 15.

Public-domain text, read in full here on John Shaqi.

Soils, their formation, properties, composition, and relations to climate and plant growth in the humid and arid regions

No reviews yet