422 APPENDIX A 
1909 
The Influence of Depth of Cultivation Upon Soil’ 
Bacteria and Their Activities. W. E. King and 
C. J.T. Doryland. Bulletin 161, Kansas Experiment 
Station. 
Tests of Pumping Plants in New Mexico. B. P. 
Fleming and J. B. Stoneking. Bulletin 73, New 
Mexico Experiment Station. 
On the Relation of Active Legumes to the Soil 
Nitrogen of Nebraska Prairies. F. J. Alway and 
R. M. Pickney. The Journal of Industrial and 
Engineering Chemistry, November, 1909, page 771. 
Tillage and Its Relation to Soil Moisture. C. C. 
Thom. Popular Bulletin No. 22, Washington 
Experiment Station. 
Methods of Tillage for Dry-farming. G. Sever- 
ance. Popular Bulletin No. 15, Washington Experi- 
ment Station. 
Dry-farming in Wyoming. V. T. Cooke. State 
Dry-farming Commission, Cheyenne, Wyoming. 
Dry-farming in Wyoming. J. D. Towar. Bulle- 
tin No. 80, Wyoming Experiment Station. 
Report of the Third Dry-farming Congress, Chey- 
enne, Wyoming. 
Alfalfa in Cultivated Rows for Seed Production in 
Semiarid Regions. C. J. Brand and J. M. West- 
gate, Circular No. 24, Bureau of Plant Industry, 
U.S. Department of Agriculture. 
Factors Influencing Evaporation and Transpira- 
tion. J. A. Widtsoe. Bulletin 105, Utah Experi- 
ment Station. 
