Arizona Agricl'ltukal Expkkimknt Statidn 431 



new method has its own s])ecial \ahie. The men and women who 

 give all or most of their time and effort to extension activities 

 know best how to reach the public with the message of the College 

 and Experiment Station. They know also the need of keeping in 

 close touch with the college and experiment station workers in 

 order to be sure of the soundness of their teaching. The Agricul- 

 tural Extension Service is the College of Agriculture and the 

 Agricultural Experiment Station teaching the people. In this State 

 the Extension Service needs to have increased financial support in 

 order to meet the pressing demands of the farm people for more 

 effective service. 



PUBLICATIONS 



While the number of publications has not been large, the 

 ({uality has been high. Several of the bulletins were of exceptional 

 merit. Following is a list of numbers, titles, and authors. Tlie 

 number of copies of each publication is given in i)arenthesis. 



Bulletin No. 89, "The Yuma Mesa," by A. K. Vinson, F. J. Crider, and G. E. 



Thompson. August, 1919, (5C00). 

 Bulletin No. 90, "Growing Cotton in Arizona," bv G. E. Thompson and C. J. 



Wood. December. 1919, (7000). 

 Thirtieth Annual Report, December 31, 1919. By the Station Staff, (2000). 

 Circular No. 27, "Chick Troubles," bv Francis R. Kcnney. September, 1919, 



(3000). 

 Circular No. 28, "A Successful Grain and Cattle Farm in Southern Arizona," 



by R. W. Clothier. November, 1919, (3000). 

 Circular No. 29, "Culling the Non-Producing Hen," by FVancis R. Kenney. 



November, 1919, (2C00). 

 Circular No. 30, "Corn as a Trap Crop for the Cotton Bolhvorm," by A. W. 



Morrill. March, 1920, (6000). _ _ 



The demand for our publications is steadily increasing. 



TKCHNICAIv ARTICLES 



Rot of Date Fruit. J. G. Brown, "The Botanical Gazette," Vol. LXXIX, No. 6, 



June, 1920. 

 Some Reforms Needed in Testing Concrete Pipe, G. E. P. Smith. "Concrete," 



Vol. 13, No. 5, p. 156, November, 1918. 

 Concrete Pipe Failures Caused bv Unequal Expansion in Shell, G. E. P. Smith, 



"Engineering News-Record," Vol. 83, No. 3, July 17, 1919. 



PROJECTS 



AGRICULTURAL CHEMISTRY 



A. E. Vinson, C. N. Catun, H. W. Estill, S. W. Griffin 



Alkali Soil Studies : Concomitant soil conditions that affect the toxicity of 



black alkali, and means for the amelioration of the effects of alkali on so-'l 



and plant (Adams fund). 



The colloidal swelling of soils and the correlation of colloidal swelling to other 



soil properties (Adams). 

 Chemical analyses: miscellaneous (Hatch fund). 

 Meteorological observations (Hatch). 

 Effect of weather conditions on processing and pasteurizing dates (State and 



Hatch funds). 

 Reclamation of alkali land at the University Farm (State). 



