194 



NEW YORK STATE MUSEUM 



Fig. 8 shows, for the Muskingum river, precipitation, evapora- 

 tion, runoff, and mean annual temperature, platted in the order 

 of the precipitation. 



MUSKINGUM RIVER 



60 r i i I I I i i i i i 



50 



40 



30 



20 



JO 



30 



20 



51- 



50° 



49 c 



48° 



47° 



o oo cr> <n 



Years m m « coco m m « 



Fig. 8 Diagram showing the relation between the precipitation, runoff, 

 evaporation and temperature on the Muskingum river, Ohio, the years 

 being arranged in order of dryness. 



On fig. 9 the relation between precipitation and runoff, for the 

 Upper Hudson, has been expressed by the formula P 2 =84.5 R. 

 These diagrams (figs. 5 to 14) all show, together with many 



