NO. 12 MOUNT ST. KATHERINE STATION ABBOT II 



variation is an important weather factor, even the dominating one, 

 as also appears from figures 13 and 14 and 23-26." 



Our experience in selecting and operating solar-radiation stations 

 has now placed us in a position where we might with relatively mod- 

 erate additional financial support set up several additional solar-radia- 

 tion stations competent to produce first-rate results. We could then 

 furnish almost every day in the year solar-constant values with acci- 

 dental errors not exceeding :^ of i percent. The conclusions of Clay- 

 ton and ourselves relative to the dependence of weather on solar 

 variation seem to have reached such a stage of probability as to 

 warrant this additional expense in the interest of producing a new 

 tool of possible value for meteorology. 



