This paper, as communicated to the Geological Society of America, has been submitted to G. H. Chadwick who has kindly read it and made valuable suggestions, a number of which have been incorporated during revision for publication. Mr. Chadwick’s suggestions relate chiefly to assigning definite age names to the basal “Catskill1” at the localities described. The author notes throughout where he agrees or disagrees with Mr. Chadwick. Since this paper was read, Mr. Chadwick has published his terminology for the red beds at successive stages of their development (Chadwick 12).3 This terminology is here adopted as follows:

Red “Catskill” Terminology from West to East

7. Cattaraugus (Bradfordian);

6. Blossburg (of Conrad; late Chautauquan but post-Chemung);

5. Montrose (of Vanuxem; upper Chemung or Wellsburg);

4. Catawissa (lower Chemung or Cayuta);

3. Catskill proper (of Enfield or upper Portage age);

2. Oneonta (of Ithaca or lower Portage age);

1. Kishatom reds . . .

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