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Elements of Agricultural Chemistry电子书

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作       者:Anderson, Thomas

出  版  社:

出版时间:2018-02-27

字       数:40.7万

所属分类: 教育 > 外语 > 实用英语

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That the phenomena of vegetation are dependent on certain chemical changes occurring in the plant, by which the various elements of its food are elaborated and con verted into vegetable matter, was very early recognised by chemists; and long before the correct principles of that science were established, Van Helmont maintained that plants derived their nourishment from water, while Sir Kenelm Digby, Hook, Bradley, and others, attributed an equally exclusive in?uence to air, and enlarged on the practical importance of the conclusions to be deduced from their views. These Opinions, which were little better than hypotheses, and founded on very imperfect chemical data, are mentioned by Jethro Tull, the father of modern agri culture, only to deny their accuracy; and he contended that the plants absorb and digest the finer particles of the earth, and attributed the success of the particular system of.
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PREFACE.

INTRODUCTION.

CHAPTER I.

THE ORGANIC CONSTITUENTS OF PLANTS.

CHAPTER II.

THE PROXIMATE CONSTITUENTS OF PLANTS.

CHAPTER III.

THE CHANGES WHICH TAKE PLACE IN THE FOOD OF PLANTS DURING THEIR GROWTH.

CHAPTER IV.

THE INORGANIC CONSTITUENTS OF PLANTS.

FOOTNOTES:

CHAPTER V.

THE SOIL—ITS CHEMICAL AND PHYSICAL CHARACTERS.

FOOTNOTES:

CHAPTER VI.

THE IMPROVEMENT OF THE SOIL BY MECHANICAL PROCESSES.

FOOTNOTES:

CHAPTER VII.

THE GENERAL PRINCIPLES OF MANURING.

FOOTNOTES:

CHAPTER VIII.

THE COMPOSITION AND PROPERTIES OF FARM-YARD AND LIQUID MANURES.

FOOTNOTES:

CHAPTER IX.

COMPOSITION AND PROPERTIES OF VEGETABLE MANURES.

FOOTNOTES:

CHAPTER X.

COMPOSITION AND PROPERTIES OF ANIMAL MANURES.

CHAPTER XI.

COMPOSITION AND PROPERTIES OF MINERAL MANURES.

CHAPTER XII.

THE VALUATION OF MANURES.

CHAPTER XIII.

THE ROTATION OF CROPS.

CHAPTER XIV.

THE FEEDING OF FARM STOCK.

INDEX.

A CATALOGUE OF BOOKS

PUBLISHED BY ADAM & CHARLES BLACK

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