THE 



KANSAS UNIVERSITY 

 SCIENCE BULLETIN. 



Vol. IX, No. 17— September, 1915. 



(Whole Series, Vol. XIX, No. 17.) 



CONTENTS: 



The Effects of Physical Fatigue on Mental Efficiency. 



Floyd Carlton Dockeray. 



A dissertation submitted in partial fulfillment of the requirements for the Degr< e of 

 Doctor of Philosophy in. the University of Michigan. 



PUBLISHED BY THE UNIVERSITY, 

 LAWRENCE, KAN. 



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



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