6C)S NEW YORK STATE MUSEUM 



Top-set beds. Horizontal or gently inclined layers of gnivel and sand which 

 form the superficial coating of glacial sjuid plains or deltas; made by wander- 

 ing aggrading streams usually at or above the level of the s'fea or lake iu 

 which the delta is building 



Water-laid. Said of detritus deposited by water 



Wisconsin epoch. Term employed in this report for East Wi.sconsin, the name 

 proposetl by Prof. Chamberlin for the last glacial epoch in the state named; 

 IteUeved to include the time of formation of the later glacial drift in the 

 eastern United States from the terminal moraine northward into Canada 



