Elements of Agricultural Chemistry and Geology
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About this book
Elements of Agricultural Chemistry and Geology is by Jas. F. W. Johnston, and the text announces Lectures on Agricultural Chemistry and Geology, to which are added suggestions for experiments in practical agriculture. The opening notice says the Lectures will be divided into four Parts and the whole will be completed in two volumes. The outline of Part I is headed On the Organic Constituents of Plants and lists, among others, elementary substances of which plants subsist and compound substances which minister to the growth of plants.
The text says that on accumulations of transported materials a soil is produced which often has no relation in its characters to the rocks which cover the country. A passage on ripening says that within three weeks of being fully ripe the straw begins to diminish in weight, and the longer it remains uncut after that time, the lighter it becomes and the less nourishing.
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Book facts
- Author
- Jas. F. W. Johnston
- Pages
- 115
- Language
- English
- Genre
- Educational
- Formats
- PDF, EPUB, Read online