CONTEITTS. 7 



Depaktment Bulletin No. 695. — Potatoes: Acreage, Production, For- 

 eign Trade, Supply, and Consumption: ' Page. 



Sources, scope, and limitations 1 



Food habits 3 



Acreage 4 



Production 5 



Per acre 6 



Per capita 7 



Average value per acre 8 



Percentage of the supply 8 



Imports 8 



Percentage of production 9 



Percentage, of the supply 9 



Supply 10 



Per capita 10 



Domestic exports 10 



Per capita 11 



Percentage of production 11 



Percentage of consumption 11 



Foreign trade sm-plus 12 



Per capita 12 



Percentage of production 12 



Percentage of consumption 13 



Consumption 13 



Per capita 14 



Percentage of production 16 



Percentage of supply 16 



Summarj^ for 1905-1914 17 



Historical tables 18 



Department Bulletin No. 696. — Geographical Phases of Farm Prices: 

 Corn: 



Scope of subject outlines 1 



Data employed and method of treatment 2 



Survey of broad regional differences in corn prices 3 



Price levels and commercial movement of corn 4 



Predominant trade routes and price levels, and local variation 6 



General features of corn distribution 7 



Production, consumption, and commerce, by States and sections 12 



Detail price map and local price factors ; 18 



City and farm consumption contrasted 19 



Farm consumption 19 



Urban markets 23 



Freight rates. . .- 24 



Costs of production and farm prices, geographic differences 25 



Characteristics of price zones 30 



Retrospective view of prices and price factors, 1871-1^15. 31 



Summary 42 



Appendix : Average farm prices of corn by counties, 1910-1914 45 



Department Bulletin No. 697. — Citrus-fruit Improvement: A Study 

 OF Bud Variation in the Marsh Grapefruit: 



Introduction 1 



History of the variety. 4 



Variability within the variety ^ 



Objects of the investigations ^ 



Plan of the investigations ^ 



Methods of keeping performance records ^ 



Descriptions of important strains |2 



Infrequent fruit variations - j^ 



Seasonal fluctuations in production -' 1^ 



Presentation of data J^ 



Comparative value of the strains ' ||j^ 



The unintentional propagation of undesirable strains |^° 



The isolation of strains through bud selection l^^ 



Top-working undesirable trees | j!j 



The selection of bud wood |r^ 



Summary 



