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CONTENTS! OF VOLUME XX1\ 



Page 



Title page i 



Ofticers ii 



Contents iii 



Dates of Publication and Editions of Brochures iii 



List of Illustrations iv 



The Use of Crinoid Arms in Studies of Phylogeny. By Elvira Wood. 



(Plates I-V) 1 



Notes on Gamarasaurus Cope. By C. C. Mook 19 



The Genesis of Antigorite and Talc. By Axexis A. Julien. ( Plate VI ) . . 23 

 A Study of the Changes in the Distribution of Temperature in Europe and 

 North America During the Years 1900 to 1909. By Henryk Arc- 



TOWSKI 39 



The Genesis of Certain Paleozoic Interbedded Iron Ore Deposits. By 



Raymond Bartlett Earle. (Plates VII-XXI) 115 



Climate and Evolution. By W. D. Matthew 171- 



Development of the Neuraxis in the Domestic Cat to the Stage of Twenty- 

 one Somites. By H. vox W. Schulte and Fkedeiuck Tilney. (Plates 



XXII-XLl ) 319 



Records of Meetings, 1914. By Edmund Otis Hovey 347 



The Organization of the Academy 407 



The Original Clia rtcr 407 



Order of Court 409 



Amended Charter 410 



Constitution 413 



By-laws 414 



Membership Lists. 31 I tecember. 1914 421 



Index 433 



DATES OF PUBLICATION AND EDITIONS OF THE BROCHURES 



Edition. 



Pp. 1-17, 1 IMay, 1914. 1100 copies. 



Pp. 19-22, 21 May. 1914. 1150 copies. 



Pp. 23-38, "25 .luly. 1914. 1500 copies. 



Pp. 39-113. 27 June. 1914. 1200 copies. 



Pp. 115-170. 4 August, 1914. 12.50 copies. 



I'p. 171-318. 18 February. 1915. 1250 copies. 



Pp. 319-346, 31i March. 1915. 1850 copies. 



Pp. 347-443, 14 May. 1915. 1000 copies. 



iii 



