42 NEW YORK STATE MUSEUM 



hypothetical way, they are omitted. In plate 17 the limits of the 

 Champlainic ice lobe is a matter of conjecture. 



It is only hoped that these maps will serve as suggestion and 

 stimulus to more detailed study of the glacial phenomena, and that 

 the future student may be able to translate much more of the 

 wonderful history. 



