VI BULLETIX OF THE GEOLOGICAL SOCIETY OF AMERICA 



Page 

 Field relations of litchfieldite and soda-syenite of Litelifield, 



Maine [abstract] : by Reginald A. Daly 90 



Adirondack anorthosite [abstract and discussion] ; by Wil- 

 liam J. MlIXER 00 



Petrology of rutile-bearing rocks [abstract] ; by Thomas 



Leonard Watson 100 



Internal structures of igneous rocks [al)stract and discus- 

 sion] ; by Frank F. Grout 100 



Two-phase convection in igneous magmas [abstract and dis- 

 cussion] ; by Frank F. Grout 101 



Hydrous silicate melts [abstract] ; by X. L. Brown and G. W. 



MOREY 102 



Significance of glass-making processes to tbe petrologist [ab- 

 stract] ; by N. L. Bowen 102 



Types of North American Paleozoic oolites [abstract] ; by 



Francis M. Van Tuyl and Harold F. Crooks 102 



Siliceous oolites in shale [abstract] ; by W. A. Tarr 103 



Inorganic production of oolitic structures [abstract and dis- 

 cussion] ; by W. H. Bucher 103 



Glauconite in dolomite and limestone of Missouri [abstract] 



by W. A. Tarr 104 



Discovery of fluorite in the Ordovician limestones of Wiscon- 

 sin [abstract and discussion] ; by Rufus Mather Bagg 101 



Occurrence of a large tourmaline in Alabama pegmatite [ab- 

 stract] ; by Frank R. Van Horn 104 



Cause of the absence of water in dry sandstone beds [ab- 

 stract] ; by Roswell H. Johnson 105 



Vote of thanks 106 



Register of the Saint Louis meeting, 1917 lOG 



Officers, Correspondents, and Fellows of the Geological Society of 



America 107 



Proceedings of the Ninth Annual Meeting of the Paleontological Society, 

 held at Pittsburgh, Pennsylvania, December 31, 1917, and January 1 and 



2, 1918 ; R. S. Bassler. Secretary 119 



Session of Monday, December 31 122 



Report of the Council 123 



Secretary's report 123 



Treasurer's report 124 



Appointment of Auditing Committee 125 



• Election of officers and members 125 



Election of new members 126 



Presentation of papers on paleontology and stratigraphy 127 



Paleozoic deposits and fossils on the Piedmont of Maryland 



and Virginia [abstract] ; by R. S. Bassler 127 



Significance of the Sherburne bar in the Upper Devonic stra- 

 tigraphy [abstract] ; by Amadeus W. Grabau 127 



Algal limestone' on the Belcher Islands, Hudson- Bay [ab- 

 stract] ; by E. S. Moore 128 



