Tkoc. Koch. Acad. Science 



Vol. 5, Pl. VII. 



L. EMMONS 



D. 



LAKE 



/ RONDEQUOIT 



Map D. Lake Emmons stage of the subsiding waters, showing Lake Iron- 

 dequoit occupying the previously unfilled depression and carving its 

 outlet through the Genesee delta silts. A shallow early escape is indi- 

 cated around the east edge of these silts. At the south the Irondequoit 

 river is cutting, in its own former deposits, the "320 foot terrace". 



