mo. II 



CONTENTS 



CHAPTER PAGE 



Preface, by J. W. Goldthwait vii 



Introduction xi 



I Varve Clay, and the Method of Investigation i 



II Conditions in New England During the Deposi- 



tion of the Varve Clay 7 



III Description of the Sections at the Localities 



Studied n 



IV The Normal Curve 47 



V The Connections 64 



VI Abnormal Varves, and Disturbances in the Clay 69 



VII The Rate of Recession and Conditions Con- 

 trolling Recession 74 



VIII The Climate During the Recession, and Cli- 

 matic Periodicity 89 



IX The Bearing of These Studies on Previous Work 



and on New Problems 94 



Explanation of the Map Illustrating the Re- 

 cession of the Last Ice Sheet from New Eng- 

 land and New York, by J. W. Goldthwait . . 104 



List of References 108 



Index 117 



