vi BULLETIN OF THE GEOLOGICAL SOCIETY OF AMERICA 



Page 



Geological reconnaissance of the Dominican Republic [title] ; 

 by Gh ARISES Wythe Cooke 139 



Difeerentiation by deformation [abstract] ; by N. L. Bowen . . 1S9 



Geology of the Katmai region, Alaska, and the great eruption 

 of 1912 [abstract] ; by Clakence N. Fenner 140 



Anorthosite-gabbro in northern New York [abstract] ; by 

 William J. Millee. 140 



Experiments illustrating the development of igneous rock 

 textures [abstract] ; by Fred E. Weight 141 



Feldspars as indicators of the sedimentary or igneous origin 

 of gneisses and schists ; by Edwaed Steidtmann 141 



Tectonic conditions accompanying intrusion of basic and 

 ultrabasic rocks [abstract] ; by W. N. Benson 144 



Michigan meteor of November 26, 1919 [title] ; by W. H. Hobbs 148 



Annual dinner 148 



Session of Wednesday, December 31 148 



Standard of Fellowship 149 



Symposium on the teaching of geology and paleontology 149 



Teaching of historical geology and paleontology as funda- 

 mental to history, the humanities, and science; by John C, 

 Meeeiam 149 



Petrology and structural geology ; by James F. Kemp 149 



Physiography and general geology ; by Heebeet E. Gregory . . 150 



American paleontologists and the immediate future of paleon- 

 tology ; by Charles Schuchert 150 



General teaching problem of paleontology ; by Herdman F. 

 Cleland 150 



Teaching of paleobotany ; by Edward W. Berry 150 



Teaching of invertebrate paleontology ; by Stuart Wellee . . . 150 



Value and use of stages of development in teaching; by 



Robeet T. Jackson 150 



Vote of thanks 150 



Titles and abstracts of papers presented before the afternoon ses- 

 sions and discussions thereon 150 



Clift islands in the coral seas [abstract] ; by W. M. Davis . . . 151 



Erosive clues to the high plateaux of Utah [abstract] ; by 

 Chaeles R. Keyes 151 



Mountain pediments: A discussion of the erosion of desert 

 ranges [abstract] ; by Kiek Beyan 152 



Some features of stream development and of glaciation in the 

 Catskill Mountains [abstract] ; by H. E. Meewin. 152 



Unicline : A term proposed for monoclinal ridges of erosion 

 [abstract] ; by Amadeus W. Geabau 153 



Use of geology on the Western Front [abstract and discus- 

 sion] ; by Alfred H. Brooks 153 



Survey of road materials in New Hampshire [abstract] ; by 

 James W. Goldthwait 154 



