TABLE OF CONTENTS. XXXvii 
APPENDIX. 
Page. 
Land slide at Troy. 634 
Bones of the mastodon. 636 
Supplementary remarks on drift. 636 
Section across the Clove corrected. 637 
Transverse axis. 637 
Axis and valley of elevation. 637 
Quarries. 638 
On the variation in the length of our day, by a variation in the earth’s diameter. 638 
