CONTENTS OP VOLUME III. 



PART I. 



Minutes of Regular Meetings 5 



Annual Meeting, May 5, 1885, 7 



Treasurer's Report, 7 



Curator's Report, 8 



Librarian's Report, y 



Secretary's Report, 10 



Board of Trustees, 3 



Officers of the Institute, 3 



PART II. 



Officers of the Scientific Section — 1884-85, . . . .18 



The Evolution of Science — LeRoy C. Cooley, Ph.D., ... 19 



The Just Claims of Natural Science — Prof. W. B. Dwight, . . 43 

 The Genealogy of the Vertebrata, as learned }_ 

 from Paleontology — Prof. E. D. Cope ) 



Some Changes in the Habits of Birds — James M. DeGarmo, Ph.D., 81 



Note on the ' ' Downy Woodpecker " — George Tremper, . . 84 



Sand and Kaolin from Decaying Quartzite — Prof. W. B. Dvvight, . 85 



The Jolly Balance— LeRoy C. Cooley, Ph. D 85 



The Peculiar Structure of Clark's Clay Beds— Prof. W. B. Dwight, 86 



An Empirical Study of Gyrating Bodies — C. B. Warring, Ph.D., . 97 



Recent Celestial Phenomena — Prof. Maria Mitchell, . . . 203 



On Sun Spots— Miss Mary Whitney, 204 



Chairman's Annual Report — Prof. W. B. Dwight, . . . 214 



Officers of the Scientific Section— 1885-86, 216 



Van Duzer and Townsend Mines — Corrigenda, . . . . 216 



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DUPLICATE 



