8 INTRODUCTION. 



obvious tha'L the lists are very incomplete. They should be taken as 

 a base on which to build. 



Statistical' information has been freely furnished by Mr. John Hyde, 

 Statistician of the Department. The data on the distribution of 

 cereals I have eoi^'-'"'^3d from a study of the manuscript maps accom- 

 panjang a report uy Prof. C. S. Plumb, about to be published by the 

 Biological Survey. The data on fruits and other crops have been 

 obtained from various sources, published and unpublished. Among 

 the former may be mentioned the ' Catalogue of Fruits ' of the Ameri- 

 can Pomological Society (Bull. 6, Div. Pomology, U. S. Department 

 Agriculture), reports of several State boards of horticulture, and 

 reports of the State Board of Trade of California. Special informa- 

 tion on Arizona has been contributed by Prof. J. W. Toumey; on 

 Florida, by Mr. Herbert J. Webber; on California, by Prof. E. J. 

 Wickson; on Washington, by Mr. Jesse Baker, and on the Snake 

 River Valle}^ at Lewiston, Idaho, and adjacent parts of Washington, 

 hy Ml'. E. II. Libby, president of the Lewiston Water and Power 

 Company, and Henry II. Spalding, of Almota, Wash. But most of 

 all I am indebted to the courtesy of the Division of Pomology of the 

 United States Department of Agriculture, and particularly to Mr. 

 William A. Taylor, assistant pomologist, who has kindly gone over 

 and corrected tlie various fruit lists witli me and has made the nomen- 

 clature conform to the rules of the American Pomological Society. 

 Without Mr. Taylor's invaluable assistance these lists would not have 

 been fit for publication. 



Corrections and additions are earnestly desired in order that sub- 

 sequent editions of the report, which is intended to serve as a guide 

 and index to the crop adaptations of the various life zones and areas, 

 may be made more complete and useful. The list of miscellaneous 

 crops here given is regrettably meager, and nothing whatever is said 

 of the varieties of tobacco, tomatoes, eggi^lants, pumpkins, squashes, 

 beans, pease, potatoes, or other garden vegetables. It is hoped the 

 necessarj^ data on these will be obtained in time for insertion in the 

 next edition. 



C. H. M. 



