NOTICE TO EXCHANGES. 



The attention of learned societies and other institutions 

 which exchange scientific publications with the University of 

 Kansas is called to the list of publications of this University on 

 the third page of the cover of this issue. 



Those marked "Supply exhausted" cannot be furnished at 

 all; those marked "Supply small" cannot be furnished sepa- 

 rately; those marked "Supply large" will gladly be furnished 

 to any of our exchanges who may need them to complete their 

 files. 



Back numbers of the Kansas University Quarterly and Oeo- 

 logical Survey, as far as possible, will be sent to those of our 

 newer correspondents who are able and willing to reciprocate. 



ANNOUNCEMENT. 



The Kansas University Science Bulletin (continuation of 

 the Kansas University Quarterly) is issued in parts at irregu- 

 lar intervals. One volume, containing from 300 to 400 pages of 

 reading-matter, with necessary illustrations, is issued each year. 

 The subscription price is $3 per volume. Exchanges with other 

 institutions and learned societies everywhere are solicited. All 

 exchanges should be addressed to the Library of the Univer- 

 sity OF Kansas. 



All communications should be addressed to 



The Kansas University Scienok Bulletin, 



LAWRENCE, KAN. 



EDITORIAL BOARD. 



W. C. STEVENS. C. E. McCLUNG. 



F. E. KESTER. E. H. S. BAILEY. 



J. N. VAN DER VRIES. 



