170 ‘J. D. Dana—The flood from the melting Glacier. 
of East Haven, east of ote bay and of the valley of the Quinni- 
piac, on the east. The rocks of Orange and Woodbridge, adjoin- 
ch the region, are, ee, those farther west, ae bein 
idge, commencing on the south at W, West Rock proper; P, 
Pine R , or Mill Rock ridge, having Whitney peak as 
its highest point; E, East Rock; Mt. Carmel to the north; Rt, 
abbit or Peter’s Rock; and Saltonstall ridge, just west of Salton- 
stall Lake. The other hills to the eastward, with a few exceptions, 
are sandstone hills, or sandstone and trap, with a oat ee of drift ; 
and between these hills south of Mill, Pine and West Rocks, ex- 
three: (1) the ebay on the east, the largest; (2) Mill River, 
or the Lapaleoe and (3) West River, on the west, with Wilmot 
the cit iy) 43 er is of sim milar character down to West- 
ville. “The ce: lake B ge Whitneyville (V), has been made by 
a dam, 40 feet high, at V. Saltonstall Lake on the east, occupies 
a natural depression. Height a prams mean high tide of West Rock 
. Fae ee feet; of East Rock, 360; of Mt. Carmel, 736; of Rab- 
it 
The evidence pales by the deposits of the New Haven 
region is of three kinds. 
1. Structural: the flow, when it set in, having made its mark 
in some places on the structure of the beds it deposite 
2. Lithological: the flood, where the current was strongest, 
having made gravel and cobble-stone deposits as a topping over 
the finer beds balers laid down. 
enudational ; the flood having Gsncaty a large amount 
of denudation torus the drift formation 
i. 2 Structural evidlence as to the flood. _The Quaternary de- 
about 42 feet; eas ‘hs, serss sa slope seaward of 8 to 10 
deposits consist of (1) sand; (2) sand and 
gar i) rarely, of laminated clay; and in some large regions 
(4) la f coarse pebbles and co ‘labs stones. 
suse or hills that rise above the level of the plain ret is 
only unstratified drift, except along the small water courses. 
