With all care possible, due allowance must yet be made for the failure to reproduce nature exactly in the color-plates. The plates are several removes from the fruit. Four negatives were taken of each subject with a color filter between the lens and the fruit. A copper plate was made from each negative, one for each of the four colors, red, yellow, black and blue. The color-plates in the book are composed of these four colors, combined by the camera, the artist, the horticulturist and the printer. With all of these agencies between the fruit and the color-plate they could not be exact reproductions. It must ever be in mind, too, that grapes grown in different localities vary more or less in all characters and that the reproduction can represent the fruit from but one locality. The specimens from which the plates were made came for most part from the Station grounds. The illustrations are life size and as far as possible from average specimens. Acknowledgments are due to Professor Spencer A. Beach of Ames, Iowa, who, while in charge of this Department previous to August, 1905, had begun the collection and organization of information on grapes, much of which has been used in this volume; to Mr. F. H. Hall, who as Station Editor has read the manuscripts and proof sheets and given much valuable assistance in organizing the information presented; to Zeese-Wilkinson & Co., through whose zeal and painstaking skill the color-plates, which add so much to the beauty and value of the book, have been made; and lastly to the grape-growers of New York who have given information whenever called upon and who have generously furnished grapes for descriptive and photographic work. U. P. HEDRICK, _Horticulturist, New York Agricultural Experiment Station_. TABLE OF CONTENTS PAGE. PREFACE v INDEX TO ILLUSTRATIONS xiii CHAPTER I.--The Old World Grape 1 CHAPTER II.--American Grapes 26 CHAPTER III.--The Viticulture of New York 68 CHAPTER IV.--Species of American Grapes 95 CHAPTER V.--The Leading Varieties of American Grapes 157 CHAPTER VI.--The Minor Varieties of American Grapes 433 BIBLIOGRAPHY AND REFERENCES WITH ABBREVIATIONS USED 531 INDEX 537 INDEX TO ILLUSTRATIONS PORTRAIT OF EDWARD STANIFORD ROGERS _Frontispiece_ FACING PAGE AGAWAM 158 AMERICA 168 AMINIA 170 AUGUST GIANT 172