CONTENTS OF VOLUME XXI 



Page 

 Title-page i 



Officers ii 



Contents iii 



Dates of Publications of Authors' Separates iii 



List of Illustrations iv 



The Ravenswood Granodiorite. By Victor Ziegler. (Plates l-II) 1 



Geology of the Cortlandt Series and Its Emery Deposits. By G. Sher- 

 burne Rogers. (Plates III— VI) 11 



The Influence of Heredity and of Environment in Determining the Coat 



Colors in Mice. By T. H. Morgan. (Plates VII-IX) 87 



On Some New Genera and Species of Pennsylvanian Fossils from the 



Wewoka Formation of Oklahoma. By George H. Girty 119 



A List of the Type Species of the Genera and Sub-genera of Formicidse. 



By William Morton Wheeler 157 



The History of the American Race. By Franz Boas 177 



Records of Meetings, 1911. By Edmund Otis Hovey 185 



The Organization of the Academy 227 



The Original Charter 227 



Order of Court 229 



The Amended Charter 230 



Constitution 233 



By-laws 234 



Membership Lists, 31 December, 1911 241 



Index 253 



DATES OF PUBLICATIONS OF AUTHORS' SEPARATES 



Edition. 



Pp. 1-10, 10 May, 1911. 325 copies. 



Pp. 11-86, 15 May, 1911. 275 copies. 



Pp. 87-117, 5 July, 1911. 200 copies. 

 Pp. 119-156, 26 August, 1911. 50 copies. 



Pp. 157-175, 17 October, 1911. 250 copies. 



Pp.177-183, 20 March, 1912. 150 copies. 

 Pp. 227-252, 25 March, 1912. 50 copies. 



iii 



