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, com- 

 bined 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 repro- 

 duction 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. 



