PUBLISHERS’ NOTE TO THE THIRD EDITION
Reading edition
The reviewer in Nature remarked on the First Edition of this book, “It has often been said that the practical man does not write books, but THERE IS HERE A COMPLETE REFUTATION OF THE CALUMNY.” The sale of two large editions has justified the opinion of the reviewer, and shows that the book from the practical man is valued. The Third Edition has been revised throughout and several new figures in the text and eight full-page plates have been added. It is confidently hoped that this new Edition will meet with the same kindly reception as the earlier ones.
November 1904.