His fellow-laborers in the extensive field of Horticulture, who are scattered over the great Northwest, having called upon him for a work on fruits which should be adapted to their wants, the author has for several years devoted himself to the task of collecting materials from which he is preparing a work upon AMERICAN POMOLOGY, of which this is to be the first volume. The title has been adopted as the most appropriate, because the book is intended to be truly American in its character, and, though it may be especially adapted to the wants of the Western States, great pains have been taken to make it a useful companion to the orchardists of all portions of our country. When examining this volume, his friends are asked to look gently upon the many faults they may find, and they are requested also to observe the peculiarities by which this fruit book is characterized. Much to his regret, the author found that it was considered necessary to the completeness of the volume, that the general subject of fruit-growing should be treated in detail, and, therefore, introductory chapters were prepared; whereas, he had set out simply to describe the fruits of our country. To this necessity, as it was considered by his friends, the author yielded reluctantly, because he felt that this labor had already been thoroughly done by his predecessors, whose volumes were to be seen in the houses of all intelligent fruit-growers. From them he did not wish to borrow other men's ideas and language, and therefore undertook to write the whole anew, without any reference to printed books. But, of course, it is impossible to be original in treating such familiar and hackneyed topics as those which are discussed at every meeting of horticulturists all over the country, and which form the subject of the familiar discourse of the green-house and nursery, the potting-shed and the grafting-room, the garden and the orchard. After the introductory chapters upon the general or leading topics connected with fruit-culture and orcharding, the reader will find that especial attention has been paid to the classification of the fruits under consideration in this volume. Classification is the great need of our pomology, and, indeed, it is almost a new idea to many American readers. The author has fully realized the difficulties attendant upon the undertaking, but its importance, and its growing necessity, were considered sufficient to warrant the attempted innovation. It is hoped that American students of pomology will appreciate the efforts which have been made in their behalf. The formulæ which have been adopted may not prove to be the best, but it is believed that they will render great assistance to those who desire to identify fruits; and that, at least, they may lead to a more perfect classification in the future.