CONTENTS 3 



Page 



Improvements in methods of investigating highly carbonized ma- 

 terials and their bearing on the mode of deposition of coal [ab- 

 stract] ; by Edward Charles Jeffrey 58 



Origin of oolites and the oolitic texture in rocks [abstract and discus- 

 sion] ; by Thomas Clachar Brown 58 



Precise leveling and the problem of coastal subsidence [abstract and 

 discussion] ; by Douglas W. Johnson 59 



Some historical evidence of coastal subsidence in New England [ab- 

 •stract and discussion] ; by Charles A. Davis 61 



Pleistocene marine submergence of the Connecticut and Hudson val- 

 leys [abstract and discussion] ; by Herman L. Fairchild 63 



Titles and abstracts of papers presented before the First Section and 

 discussion thereon 65 



Cause of the postglacial deformation of the Ontario region [abstract 

 and discussion] ; by J. W. Spencer 65 



Origin of dolomite [abstract] ; by Francis M. Van Tuyl 66 



Flattening of limestone gravel boulders by solution; by Johan Au- 

 gust Udden 66 



High-level loop channel [abstract] ; by T. C. Hopkins 68 



Divergent ice-flow on the plateau northeast of the Catskill Mountains 

 as revealed by ice-molded topography ; by John L. Rich 68 



Length and character of the earliest interglacial beds [abstract] ; by 

 A. P. Coleman 71 



Age of the glacial deposits in the Don Valley, Toronto, Ontario [ab- 

 stract] ; by G. Frederick Wright 71 



Titles and abstracts of papers presented before the Third Section and 

 discussions thereon 73 



Manganese deposits of Conception and Trinity bays, Newfoundland 

 [abstract] ; by Nelson C. Dale 73 



Geology of the Wabana iron ore of Newfoundland [abstract] ; by Al- 

 bert O. Hayes 74 



Geology of the Cumberland-Diamond Hill district, Massachusetts- 

 Rhode Island [abstract] ; by Charles H, Warren and Sidney Powers. 75 



Sedimentary character of garnetiferous hornblende schist, Hanover, 

 New Hampshire [abstract] ; by John Wesley Merritt 75 



Oolites of the Chimneyhill foiTQation, Oklahoma [abstract and dis- 

 cussion] ; by Chester A. Reeds 75 



Temiskamite, a new nickel arsenide from Ontario [abstract] ; by T. L. 

 Walker 76 



Oolitic and pisolitic barite from the Saratoga oil field, Texas ; by E. S. 

 Moore ' 77 



Annual dinner 80 



Session of Thursday, January 1 80 



Some observations of the Volcano Kilauea in action [abstract] ; by 

 Arthur L. Day 80 



Titles and abstracts of papers presented in general session and dis- 

 cussions thereon 81 



Stratigraphy of Red Beds of New Mexico [abstract and discussion] ; 

 by N. H. Darton 81 



