PEEFACE. V 



in cultivation largely planted in the varied parts of the 

 United States and Canada, together with those of special 

 promise in local parts, will follow as a completed volume as 

 Part II. Part II will also he published as a separate vol- 

 ume probably for the benefit of those most interested in 

 varieties that succeed most perfectly on varied soils and in 

 different sections and districts. 



The figures used in Part I, when not original, are copied 

 by permission from those used by Professor Goff, Professor 

 Green, Professor Bailey, and others, as credited in each 

 case, to whom special thanks are due. 



My able associate. Professor N. E. Hansen, has read the 

 manuscript of Part I and assisted in various ways, and he 

 has given much time and labor to the responsible and 

 difficult work of describing and deciding the status of the 

 many varieties in cultivation as given in Part II. 



The discussions and statements in Part I have been care- 

 fully considered, and verified as far as possible by travel, 

 correspondence, reading, and consultation, yet in some 

 cases they will be questioned. But this will lead to inves- 

 tigation. It cannot be hoped that a volume of this character 

 can be faultless in all respects. The details of modern 

 horticulture are so varied that no one person can cover the 

 whole range without omissions and mistakes of judgment. 



J. L. BUDD. 



Ames, Iowa, March 1, 1903. 



