424 APPENDIX A 
Tri-Local Experiments on the Influence of Envi- 
ronment on the Composition of Wheat. J. A. LeClere 
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. 8. Department 
of Agriculture. 
Traction, Plowing. L. W. Ellis, Bulletin No. 170, 
Bureau of Plant Industry, U. 8S. Department of 
Agriculture. 
Seasonal Nitrification as Influenced by Crops and 
Tillage. C. A. Jensen. Bulletin No. 173, Bureau 
of Plant Industry, U. 8S. Department of Agriculture. 
Coéperative 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. 
