APPENDIX A 423 
A Study of the Production and Movement of 
Nitric Nitrogen in an Irrigated Soil. R. Stewart 
and J. E. Greaves. Bulletin 106, Utah Experiment 
Station. . 
Dry-farming: Report of the Proceedings at the 
Third Dry-farming Congress and further Investiga- 
tions in America. Senator J. H. McColl. Gov- 
ernment Printing Office, Australia. 
Dry-farming: Its Principles and Practice. W. 
Macdonald. The Century Company. 
1910 
Dry Land Farming in Eastern Colorado. H. M. 
Cottrell. Bulletin 145, Colorado Experiment Sta- 
tion. 
Dry-farm Practice in Montana. A. Atkinson. 
Circular No. 3, Montana Experiment Station. 
The Fixation of Nitrogen in Some Colorado Soils. 
W. P. Headden. Bulletin 155, Colorado Experi- 
ment Station. 
Drouth Resistant Plants for the Arid Southwest. 
J. J. Thornber. Timely Hints for Farmers, No. 83, 
Arizona Experiment Station. 
The Use of Windmills in Irrigation in the Semi- 
arid West. P. E. Fuller, Farmers’ Bulletin 394, 
U. 8. Department of Agriculture. 
A Contribution to our Knowledge of the Nitro- 
gen Problem under Dry-farming. F. J. Alway and 
R.S. Trumbell. Journal of Industrial and Engineer- 
ing Chemistry, April, 1910. 
Report of the Fourth Dry-farming Congress, Bill- 
ings, Montana. 
