IN RAIN AND SNOW, IN THE UNITED STATES. 



1. 



The tabular mean, results are graphically exhibited in Diagrams 5, 6, and 7 fur 

 the more reliable groups. 



The irregularities in the successive annual amounts of rain are very great, yet 

 they do not wholly obliterate the indications of a conformity to general laws ; thus 

 Diagrams 5 and 6 distinctly indicate an increase of rain, on the average, since 

 1835, and show a certain tendency to an arrangement of groups of years of drought 



Diagram 5. 



FLUCTUATIONS IN THE ANNUAL RAIN FALL 

 Group I. — Atlantic Sea-coast, Maine to Maryland. 



followed by unusually wet years. The fluctuations of rain, as shown on Diagrams 

 5 and 6, are evidently similar, and these groups might have been combined into 

 one; the fluctuations in the Ohio Valley are of quite a different character. 



