424 APPENDIX A 



Tri-Local Experiments on the Influence of Envi- 

 ronment on the Composition of Wheat. J. A. LeClerc 

 and S. Leavitt. Bulletin 128, Bureau of Chemistry. 

 U. S. Department of Agriculture. 



Fruit Growing for Home Use in the Central and 

 Southern Great Plains. H. P. Gould. Circular 

 No. 51, Bureau of Plant Industry, U. S. Department 

 of Agriculture. 



Traction Plowing. L. W. Ellis, Bulletin No. 170, 

 Bureau of Plant Industry, U. S. Department of 

 Agriculture. 



Seasonal Nitrification as Influenced bj' Crops and 

 Tillage. C. A. .lensen. Bulletin No. 173, Bureau 

 of Plant Industry, U. S. Department of Agriculture. 



Cooperative Grain Investigations. Nephi Sub- 

 station. Nephi, Utah. Report of the Years 1907 

 and 1908 and 1909. F. D. Farrell. 



The Nitrogen and Carbon in the Virgin and 

 Plowed Soils of Eastern Oregon. C. E. Bradley. 

 The Journal of Industrial and Engineering Chemis- 

 try, April, 1910, page 138. 



Storing Moisture in the Soil. W. W. Burr. Bul- 

 letin No. 114, Nebraska Experiment Station. 



