104 



THE UNIVERSITY SCIENCE BULLETIN. 



TABLE I. — Eastern- Grovp. Rainfall data for twenty-four consecutive cycles ending 1913. 

 Sun-spot minimum occurs in phase 4. 



TABLE 2.— Rainfall data of six western states September, 1889, to April, IS 13. 

 Phase numbers same as for Eastern group. 



* These months not used in mean since only one state's data available. 



