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SEA AND LAND 



At the front of every glacier there is accumulated a mass 

 of rocky debris which is shoved, dragged, or carried by the ice 

 and dropped at its margin. The vast ice-sheet which recently 

 covered the eastern coast of the continent as far south as New 



Edgartown Harbor. Martha's Vineyard 



Jersey here and there built these morainal accumulations to 

 a great height. During the greatest extension of this ice- 

 sheet its edge passed beyond the shore at New York and lay 

 beyond the coast from that point for an undetermined dis- 



