PREFACE xix 



not turn a deaf ear to the numerous re- 

 quests from sweet pea growers as well as 

 from technical men who urged the prepara- 

 tion of a book of this nature. The writer 

 seriously solicits suggestions or criticism 

 of this work. 



Acknowledgments are due to Professor 

 A. C. Beal, Mr. F. G. Cuthbertson, and 

 C. C. Morse and Co. for valuable contri- 

 butions on the culture of the sweet pea. 

 To Mrs. D. de Sola Pool (nee Miss Tamar 

 Hirchensohn) , previously of the Faculty 

 of Hunter College, N. Y.; to Dr. Owen 

 Sypherd of Delaware College, to Dr. C. 

 H. Farr of the A. and M. College of 

 Texas, to Dr. M. T. Cook of Rutgers 

 College for suggestions in reading the 

 manuscript. To the Delaware Experi- 

 ment Station for figs. 7 to 21, 25 to 31, 38, 

 42, 43, and 45, all of which were origin- 

 ally taken by the author. All the other 



