CONTENTS. 



I. FACTS; 



OR, 



THE RECORD GIVEN US TO READ. 



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PAGE. 



I. THE GEOLOGY AT OUE DOORS, ........... 9 



Surface Materials. 



II. LOST EOCKS, ................... 13 



Bowlders. 



III. THE GRAVEL PIT, ................. 18 



Arrangement of the Drift. 



IV. AMONG THE GLACIERS, .............. 24 



Geological Action of Glaciers. 



V. THE HILLSIDE SPRING AND ITS WORK, ....... 30 



Subterranean Waters and their Deposits. 



VI. INTRODUCTION TO THE ROCKS, ........... 35 



Kinds of Minerals and Stones. 



VII. THE FLOODS OF THE GREAT LAKES, ........ 41 



Lacustrine Deposits and Terraces. 



VIII. THE MUD FLAT, ................. 45 



Sedimentation. 



IX. THE RIVER GORGE, ... ........ ^ . . . 50 



Erosion. 



X. A WALK UNDER THE SEA, ............ 56 



What goes on in the Ocean Depths. 



XI. BY THE ROCKY WALL, .............. 62 



Strata and their Classification. 



XTT. MYSTERIOUS FORMS OF LIFE, ............ 67 



Fossils. 



