V/ll 



CONTENTS. 



Nahant : Cape Ann, ----- 95 



Nantucket Beach : Cape Cod, 96 



Nantucket and Martha's Vineyard, 98 



Gay Head : - - - - 9*1 



South Hadley Falls : Shelburne Falls, - - - 101 



Spicket Falls : Falls in Fall River : Pawtucket Falls : The Gorge, 



alias the Glen, jq^ 

 Cascade in Leverett : do. and Natural Bridge, &c on Hudson's 



Brook, - - - - - * - 103 



Canaan Falls : Southampton Adit : Sunderland Cave and Fissure, 104 



Caverns in Berkshire, - - - - - 105 



Purgatories, - - - - - 106 



Autumnal Scenery, _____ iQ7 



Sketches of Scenery in Massachusetts, - - - 108 



PART III. SCIENTIFIC GEOLOGY. 



Preliminary Remarks, - - - - 111 



Names and Classification of Rocks, - - - 112 



Additional Explanations of the Map, - - - 113 



STRATIFIED ROCKS- 



Alluvium defined, - - - - - - 114 



Alluvium of Rivers, - - - - - 115 



Coast Alluvium : Salt Marsh Alluvium, - - - 116 



Submarine Forests, - - - - - 117 



Peat; its origin, - - - - - - 118 



Marl : Alluvium of Disintegration, J20 ' 



Curious Inscription : Alluvium of Degradation, - - 121 



Bog Ore ; its mode of Production, - 122 



Oxide of Manganese ; an alluvial deposit, - - 123 



Power of Ice in removing bowlders : Encroachments of the sea 



upon the coast, - - - - - 124 



Boston Harbor, how produced, - 125 



Gain of the Land upon the Sea, - 128 



Dunes or Downs, - - - - 130 



Valleys of Massachusetts : how formed, - - 131 



Terraced Valleys, - - - - - - 134 



Change in the bed of Green River, - - - - 136 



Ice Floods, - - - - - - 139 



Valleys of Denudation or Excavation, - - 140 



Diluvium defined, - - - - - 141 



Its situation and Extent in Massachusetts, - - - 142 



Bowlders, - 145 



Consolidated Diluvium, _____ 150 



First Proof of a southerly movement in our diluvium, - - 152 



Peculiarities in the Diluvium of Berkshire County, - - .156 



Second Proof (diluvial grooves,) of a southerly current, • 159 



