HOXEOYE, BEISTOL, AND CANANDAIGUA VALLEYS 37 



Naples village. The divide is on land of Henry Rathbun, two and one- 

 half miles from Naples and seven miles from the head of the lake. The 

 vt^ater parting is a long narrow swamp col from which a good channel 

 leads eastward to Naples. The elevation of the col is somewhat under 

 1,200 feet. During the earlier and higher phase of the Naples lake 

 (glacial Canandaigua)* its waters flooded the Honeoye valley, which 

 held consequently only a western arm of the Naples lake. The glacial 

 Honeoye came into separate existence when the Naples lake was drained 

 to a lower level by its eastern outlet toward the Flint Creek valley (see 

 description on next page), this second outlet having an original elevation 

 probabl}^ over 1,150 feet, but reduced subsequently by down cutting. A 

 conspicuous delta west of Naples village was built by the Honeoye outlet 

 stream, assisted by the West Hollow creek. No study has been made 

 of the water-levels in the Honeoye valley or of its later lake histor\\ 



Bristol (Mud Creek) Valley 



The deep Bristol valley, which carries the upper waters of Mud creek, 

 lies between the Honeoye and Canandaigua valleys. The head of the 

 main valley is at South Bristol, where it divides into two valle3^s, one 

 leading southwest and heading in a moraine divide with elevation of 

 about 1,600 feet, the other leading southeast to a divide with elevation 

 of about 1,290 feet, one mile north of Bristol Springs. This lower divide 

 was never the passage for any stream of water, but was low enough to 

 permit the higher waters of the Naples lake to flood the Bristol vaMey. 



Canandaigua Valley 



The lacustrine phenomena at the head of the Canandaigua valley were 

 described in some detail in the earlier paper. The glacial water, Naples 

 lake, had a i)rimitive elevation something over 1,350" feet. Its outlet 

 was southward to Susquehanna drainage through a well formed channel 

 near Atlanta railroad station, which has an elevation of about 1,340 

 feet. No corrections are here required, but a clearer interpretation of 

 certain water-levels is given by the recent discovery of an outlet chan- 

 nel lower than the primitive one south toward Atlanta in the Cohocton 

 valley. In the former description of deltas at Na})les several w^ell de- 

 veloped water-levels were described which did not correlate with the 

 superior Atlanta outlet, and yet were far above the hypothetical New- 

 beny plane. The exj^lanation has been found in a channel cut by the 

 escaping jvaters across the north and south ridge between the West River 



*See former article. Bull. Geol. Soc. Am., vol. 6, pp. :-i01-364. 



