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 Statioii. 



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. S. 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. 



