CONTENTS XI 



Page 



Continuation of paleontologic papers 213 



Bibliographic studies of the Cambrian [abstract] ; by Charles 



E. Resser 21H 



Correhition of the Middle Cambrian of Newfoundland and 



Great Britain [abstract] ; by B. F. Howell 214 



Cambrian formations and faunas of the upper IMississippi 



Valley; by E. O. Ulrich 214 



Trilobites as ancestors [abstract] ; by Percy E. Raymond... 214 

 Origin of the "beach rock" (Coquina) at Loggerhead Key, 



Tortugas [abstract]; by Richard M. Field 215 



Foraminiferal fauna of the Byram marl [abstract] ; by Joseph 



A. CUSHMAN 215 



Stratigraphy of the Virgin Islands of the United States and 

 of Culebra and Vieques Islands [abstract] ; by Thomas 



Wayland Vaughan 216 



Geologic reconnaisance in Santo Domingo [abstract] ; by C. 



Wythe Cooke 217 



Notes on the teaching of paleobotany ; by Marion D. Weston 220 

 Method of appearance of additional arms on increasing age in 



Caryocrinites [abstract] ; by A. F. Foerste 220 



Status and limits of the Paleocene [abstract] ; by W. D. 



Matthew 221 



Study of the life processes in fossils ; by R. S. Bassler 222 



Sponges of the Middle Cambrian; by Charles D. Walcott.. 222 

 Inorganic evidence of disconformities in limestone ; by 



Richard M. Field 222 



Minutes of sectional meeting on vertebrate paleontology 222 



Further discussion of the ecological composition of the Eagle 



Creek flora [abstract] ; by Ralph W. Chaney 222 



New mounts in the Princeton Geological Museum [abstract] ; 



by William J. Sinclair 223 



Study of the entelodonts [abstract] ; by Edward L. Troxell. . 223 

 Mounted skeleton of Moschops capensis Broom [abstract] ; by 



William K. Gregory 223 



Small mammals in the Marsh Collection at Yale University 



[abstract] ; by Edward L. Troxell 223 



Tertiary artiodactyls from the Marsh Collection [abstract] ; 



by Richard S. Lull 224 



Oligocene Equidse in the Marsh Collection [abstract] ; by 



John P. Buwalda 224 



Pawnee Creek beds of Colorado [abstract] ; by F. B. Loomis 224 

 New specimen of the Pleistocene bear, Arctotherium from 



Texas [abstract] ; by W. D. Matthew 224 



Northrotherium shastense, a Pleistocene ground sloth of North 



America, with remarks on the Megalonychidje ; by Chester 



Stock 225 



Register of the Boston meeting, 1910 225 



