THE 



KANSAS UNIVERSITY 

 SCIENCE BULLETIN. 



Vol. XIII, No. 11— July, 1922. 



CONTENTS: 



A Rainfall Period Equal to One-ninth the Sun-spot Period, 



Dinsmore Alter. 



PUBLISHED BY THE UNIVERSITY, 

 LAWRENCE, KAN. 



Entered at the post office in Lawrence as second-class matter. 



9-3728 



