THE 



KANSAS UNIVERSITY 

 SCIENCE BULLETIN. 



Vol. IX, No. 6— December, 1914. 



(Whole Series, Vol. XIX, No. 6.) 



CONTENTS: 



On Cubic Surfaces and Their Nodes, S. Lefschetz, 



PUBLISHED BY THE UNIVERSITY, 

 LAWRENCE, KAN. 



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



5-2496 



