142 Fe FAR CTIIED 
the static water. Another water-plane, toward 700 feet aititude, 
is less evident. 
The drainage is west and north into Irondequoit creek and 
north by Great brook, the latter flowing upon the west side of 
the Boughton drumloid and joining Mud creek east of Victor. 
Few water-pools worth mentioning occur. One pool lies in 
a deep basin between the western ends of the Hopper and Fort 
Hill ranges, back of the house of Mr. Covill. The large basins 
seem to be of pervious materials and far above the till or rock 
floor. Good kettles holding water except in dry seasons occur 
north of the Fort hill range. 
Eskers probably do not occur in this area. If any exist they 
are in the northern part of the area east of the Fishers and Mil- 
‘lers Corners road. 
Composition and structure-—Till is found in the knolls near 
Millers Corners. The top of one hill, a mile northeast and with 
altitude of about 900 feet, seems to be wholly till, with bowlders. 
One-fourth mile west of the station the railroad makes a cutting 
in till which is probably drumloidal. Some of the slopes and 
summits are coarse sand, but the great bulk of the higher ranges 
is gravel. Fort hill is capped with sand, but the rest of the 
range is mostly gravel. Less sand is seen upon the summit of 
the Hopper range, the highest points being fine gravel. The 
composition of this range has been described above. The hills 
south of Millers Corners contain much gravel and some heavy 
beds of very round cobble. The bulk of the northern, con- 
stricted area toward Fishers seems to be sand, but Dr. Dryer 
states that there is much till in the knolls and plateau lying 
north of the Fort hill range. 
Stones and cobbles are found in the sand at various eleva- 
tions. The foundation of the southern part of the area is Cor- 
niferous limestone and the characteristic chert is found upon the 
summits of the Hopper range. The northern edge of the Cornif- 
erous is traced near Victor.t. Large bowlders of crystallines, 
Medina and Corniferous are seen along the highway between 
™Economic and Geologic Map of the State of New York, by F. J. H. Merrill, 1895. 
