ABSTRACTS OF PAPERS 67 



DATA OX THE GEOGRAPHIC XOJilEXCLATURE OF THE SOUTHERX CALIFORXIA 



AXD TEXAS REGIOXS 



BY ROBERT T. HILL 



{Abstract) 



Revised classification of the physiograpliic features of the Texas region, 

 with sketch map. 



A revision of previous earlier classifications made by the author, with ac- 

 companying sketch, 



A nomenclature map of the physiographic features of southern California. 



This diagrammatic map is an endeavor to name and outline the physio- 

 graphic features of southern California. These comprise a large number of 

 units which have not hitherto been satisfactorily presented. 



Presented in full extemporaneous^. 



SECTIONAL MEETIXG OF FRIDAY AFTERXOOX FOPt GROUP B 



The section for the presentation of papers on stratigraphic, paleonto- 

 logic, areal, and cartographic papers met, at about 2.^5, in Eoom F 214, 

 with Yice-President Eobert T. Hill in the chair and Charles P. Berkey 

 as Secretar}'. 



TITLES AXD ABSTRACTS OF PAPERS OF GROUP B AXD DISCUSSIOXS THEREOX 



SUCCESSFUL METHOD OF TEACHIXG HISTORICAL GEOLOGY 

 BY GEORGE H. CHADWICK 



{Ahstract) 



The writer's success in teaching historical geology by first working back- 

 ward from the present seems to be based on a sound pedagogical principle, 

 previously employed by him successfully in the teaching of biology. The link- 

 age of this with other factors of method for increase of interest will be l)riefly 

 described. 



Bead by title. 



ORDOVICIAX OVERLAP IX THE PIEDMOXT OF SDUTHERX PEXXSYLVAXIA 



AXD MARY LAX D 



BY GEORGE W. STOSE AXD AXXA T. JOXAS 



Eead l)y title in absence of the author. 



