4 Contents. 



v.— Botanical Papers : page 

 The Botanical Features of the New United States Pharma- 

 copoeia. L. E. Sayre 185 



A Little Experiment in Flower-making, Grace. Meeker 188 



Notes on the Flora of the Rosebud Indian Reservation, South 

 Dakota. Albert B. Reagan 190 



VI.— Mathematical and Physical Papers: 



Variations of Latitude. E. Miller 199 



The Genesis of Gold in Mineral Veins and Placers. J. T. Love- 

 well 205 



The Gas-engine in the Commercial Development of Kansas. P. 



F. Walker 208 



Note on Certain Formulas for the Design of Reenforced Con- 

 crete Beams. A. K. Hubbard 217 



Examination of Coal-dust after Explosions in Mines of South- 

 eastern Kansas. Edward Bartow 228 



The Foucault Experiment. J. T. Lovewell 230 



A Deep Well at Emporia. Alva J. Smith 234 



The Interpretation of Indicator Diagrams. Charles I. Corp .... 239 

 A Bit of Engineering at Mount Vernon. M. L. Ward 245 



VII.— Miscellaneous Papers: 



The Study of Mineralogy for Self-culture. J. C. Cooper 253 



Mutations and the Evolution of Man. Alton H. Thompson 260 



VIII.— Announcements, etc. : 



Relating to Academy Publications 267 



Price List of Publications .' 268 



Index to this Volume 269 



ILLUSTRATIONS. 



Capitol Building Frontispiece. 



Academy Museum, two views 16, 40 



Chemical Cultures 49 



Kansas Spiders 129, 130 



A Deep Well at Emporia , 237 



Indicator Diagram 240 



