APR £0 1922 



/ i 





BULLETIN OF THE UNIVERSITY OF KANSAS 



Vol. XXI 



MAY 15, 1920 



No. 10 



I 



Science Bulletin 



\^^u 



Vol. XIII, Nos. 1, 2, 3, 4, 5, 6, 7, 8, 9 



(Continuation of Kansas University Quarterly.) 



LAWRENCE, KANSAS 



Published Semimonthly from January to June and Monthly from July to 

 December, inclusive, by the University of Kansas. 



Entered as second-class matter December 29, 1910, at the post office at Lawrence, Kansas 



under the act of July 16, 1894. 



9-8fiO 



