TÀI LIỆU THƯ VIỆN SỐ

THE PRINCIPLES, PROCESSES, AND EFFECTS OF DRAINING LAND WITH STONES, WOOD, PLOWS, AND OPEN DITCHES, AND ESPECIALLY WITH TILES

A Book upon Farm Drainage! What can a person find on such a subject to write a book about? A friend suggests, that in order to treat any one subject fully, it is necessary to know everything and speak of everything, because all knowledge is in some measure connected.
With an earnest endeavor to clip the wings of imagination, and to keep not only on the earth, but to burrow, like a mole or a sub-soiler, in it, with a painful apprehension lest some technical term in Chemistry or Philosophy should falsely indicate that we make pretensions to the character of a scientific farmer, or some old phrase of law-Latin should betray that we know something besides agriculture, and so, are not worthy of the confidence of practical men, we have, nevertheless, by some means, got together more than a bookfull of matter upon our subject.

Từ khóa: Agriculture of America, plug drainage, various methods of drainage, irrigation, thủy lợi, hệ thống thoát nước, các phương pháp thoát nước