Figure 47. A Rhone Valley 

 temporary reservoir on the 

 site of a grain field "water 

 farming" in rotation with 

 "land farming." 



Yd* 



DR. GEORGE W. FIELD 



Figure 46. Map of small sector 

 of the upper Rhone Valley (France) 

 showing numerous farm reservoirs. 



Figure 48. A Rhone Valley grain 

 field on the site of a drained reser- 

 voir "land farming" in rotation 

 with ' ' water farming.' ' 





DR. GEORGE W. FIELD 



