THE ALGONQUIN LAKES 505 



the almost resundered Huron waters during the later Nipissing-Ottawa 

 outlet stage be named "Huronipissing." The temporary lifting of Port 

 Huron to level with or above the Chicago outlet and subsequent abate- 

 ment witnesses to the migrating bulge hereinbefore advocated. 



Correlation Chart 



The relations of these water bodies as above understood are exhibited 

 in the accompanying correlation chart, in which contemporaneity is hori- 

 zontally represented and time reads from top downward. Proportional 

 time values are not closely attempted with present inadequate knowledge, 

 but attention is called to the rhythmically spaced ice maxima, which may 

 have a coefficient of approximately 26,000 years. The purpose of the 

 chart is to focus attention on outstanding problems and provoke fresh 

 attack. 



A similar chart projected for the minor lakes of western and central 

 ISTew York is deferred to a future writing, but the following pertinent 

 note is retained here : 



Cattaraugus Lakes 



Exploration in the Cattaraugus country during the past summer re- 

 vealed a fine channel leading from the South Branch Cattaraugus Creek 

 westward toward New iVlbion, with summit elevation about 1,430 feet 

 above tide. As this is intermediate in altitude between the Lime Lake 

 (Machias) and Persia outlets already recognized by Fairchild,^'^ the suc- 

 cession of lakes in the Cattaraugus Valley gains a new member. Another 

 probable outlet examined is the pass north of Ellicottville at about 1,640 

 feet aneroid (sheet not issued). It would seem that the Dayton pass 

 used by the Buffalo and Jamestown division of the Erie Railway must 

 also have carried some overflow for a time, but there is no good channel 

 across the col. 



Some preglacial Rivers ■ 



In the nature of a supplementary proposal, the following names are 

 tentatively put forward for certain fairly established rivers of preglacial 

 drainage : "Allegowanda'^ for the ancient upper Allegany, with discharge 

 by Gowanda to the lower Cattaraugus Valley; "Geneseraga'^ for the 

 ancient Genesee past Sonyea into the Canaseraga trunk valley and, thence 

 lower, through the Irondequoit trough, and "Senecahanna" for the 

 ancient upper Susquehanna flowing out by the Seneca Lake A^alley to 

 the Ontarian River. • 



1' Bull. 106, N. Y. state Museum, pp. 16-17, 35. 



