FEB 23 1901 



CONTENTS. 



PAGE. 



Table op Contents iii 



List of Members. Revised to December 31, 1900: 



1. Patrons v 



2. Active Members v 



3. Corresponding Members xii 



Exchanges xix 



History of the Academy (Abstract) xliii 



Record. January 1 to December 31, 1900 xlvii 



Papers Published. January 1 to December 31, 1900: 



1. T. J. J. See. — On the temperature of the sun and on 



the relative ages of the stars and nebulae. — Issued 

 February 5, 1900 1 



2. Charles Robertson. — Some Illinois bees. — Issued 



February 21, 1900 47 



3. Stuart Weller. — Kinderhook faunal studies. II. The 



fauna of the Chonopectus Sandstone at Burlington, 

 Iowa. — Platesi.-IX.— Issued February 24, 1900 57 



4. A. S. Hitchcock. — Studies on subterranean organs. 



11. Some dicotyledonous herbaceous plants of Man- 

 hattan, Kansas. — Issued April 3, 1900 131 



5. Hermann von Schrenk. — A severe sleet storm. — Plates 

 "X.-XL— Issued April 12, 1900 143 



6. Francis E. Nipher. — On certain properties of light- 



struck photographic plates. — Plates u XII.-XVII. — 

 Issued May 16, 1900 151 



7. Mary Klem. — The development of Agaricocrinus.. — 



Plates' XVIII.-XXL — Issued May 30, 1900 167 



8. Adolf Alt. — Original contributions concerning the 



glandular structures appertaining to the human eye and 

 its appendages. — Plates" XXII.-L VII. — Issued July 



12, 1900 185 



9. Francis E. Nipher. — Positive photography, with 



special reference to eclipse work. — Issued October 

 24, 1900 209 



10. Francis E. Nipher. — The f rictional effect of railway 



trains upon the air. — Issued November 12, 1900 215 



11. Title-page, prefatory matter and index of Vol. X. 



Record, January 1 to December 31, 1900. Papers con- 

 tained in first ten volumes. — Plate A. — Issued Janu- 

 ary 31, 1901. 



List of Authors 229 



General Index .»- 230 



Index to Genera 232 



Classified List of Papers Contained in Volumes I-X 235 



