CONTENTS / 



Page 

 Department Bulletin No. 1338. — The Family Living from the 

 Farm. Data from 30 Farming Localities in 21 States for the 

 Years 1918 to 1922 — Continued. 

 The farm business — Continued. 



Farm receipts 23 



Farm income 25 



Family income 26 



Labor income 26 



Value of the farmer's labor 27 



Tenure 27 



List of references 28 



Department Bulletin No. 1339. — The Effect of Weather Upon 

 the Change in Weight of a Colony of Bees During the Honey 

 Flow: 



Introduction : 1 



Method of obtaining data 5 



Method of presenting data 8 



Comparison of changes in weight of two colonies of bees 11 



The spring period 15 



The faU period 22 



Correlations between external factors and the changes in colony- 

 weight 25 



The effect of unknown factors on changes in colony weight 38 



Theoretically changing weather factors and predicting resulting 



gains 44 



Conclusions 48 



Literature cited 50 



Department Bulletin No. 1340. — Irrigation Requirements of the 

 Arable Lands of the Great Basin: 



Introduction 1 



Units and forms of expression 3 



The Great Basin 4 



General character of the soils of the Great Basin 5 



Climatic conditions 6 



Water supply 6 



Agricultural products 12 



The relation of irrigation water to crop production 13 



Time of irrigation 19 



•Conditions influencing the quantity of water required for irrigation. _ 29 

 Water requirements as affected by State, community, and corporate 



regulations 33 



Lands to be reclaimed 37 



Seasonal net water requirements 38 



Use of water on crops in the Great Basin 39 



Appendix 41 



Department Bulletin No. 1341. — Effects of Continuous Selec- 

 tion for Ear Type in Corn: 



Object of the investigation 1 



Material and methods 2 



Establishing the strains 2 



Growing seed for comparison 2 



Methods of comparison 2 



Experimental data 3 



Data on number of kernel rows 5 



Data on productiveness 6 



Discussion 7 



Summary 10 



Department Bulletin No. 1342. — Effect of Feeding Green Rye 

 and gse] • cowpeas on the flavor and odor of mllk: 



Experimental feeding of green rye 2 



Procedure 2 



J'Cfrling 15 pounds one hour before milking 4 



Feeding 80 pounds one hour before milking 4 



i eeding 30 pounds immediately after milking 5 



