MEMBERS OF THE UNIVERSITY GEOLOGICAL SURVEY. 



FRANCI3 H. SNOW, 

 Chancellor, and ex officio Director. 



EDGAR H. S. BAILEY, 

 Department of Chemistry. 



SAMUEL W. WILLISTON, 

 Department of Historical Geology and Paleontology. 



ERASMUS HAWORTH, 

 Department of Physical Geology and Mineralogy. 



FOR VOLUME VI. 



SAMUEL W. WILLISTON, Paleontologist. 

 JOSHUA W. BEEDE, Assistant Pa!eontologist. 

 ALBAN STEWART, Assistant Paleontologist. 

 SYDNEY PRENTICF, Artist. 



