870 JOTRXAL ()!• I'ORKSTKV 



Idaho region by a combination of temperatures somewhat above the 

 average, coupled with a high percentage of clear days, with an average 

 amount of precipitation evenly distributed in the form of good rains at 

 intervals of four to ten days preceded and followed by lighter showers. 

 This conclusion, while in harmony with the laws of plant physiology, 

 must, however, be considered tentative until supported by more inten- 

 sive study, and is presented at this time with the hope of stimulating 

 discussion and further study along the lines indicated. 



