INDEX TO WATER LEVELS CHAMPLAIN-HUDSON VALLEYS 263 



Leda arctica, 211^ 213*. 

 portlandica, 213\ 



Leda clay, 218^ 



Lesley, J. P., cited, 250^ 



Level, bearing of change of, on the 

 duration of the postglacial inter- 

 val, 236^-39'. 



Lewis, E., cited, 250^ 



Lewis, H. C, cited, 250^. 



Lindenkohl, A., cited, 72^ 250^. 



Logan, cited, 21 8^ 



Low level terraces, lll^ 



Lyell, Sir Charles, cited, 209^ 212\ 

 250P. 



Macfarlane, T., cited, 25i0^ 



McGee, W. J., cited, 250^ 



Macoma calcarea, 208®. 



groenlandica, 208^ 208^ 209^ 209^ 

 209«, 211^ 212*, 213^ 213^ 213*, 

 213^ 213«, 216°. 



Manhasset formation, 233^ ; expos- 

 ure, 90^. 



Marginal lakes, 152^. 



Marine conditions, southern ex- 

 tension of, history of opinion 

 concerning, 220^-22. 



Marine deposits, of the Champlain 

 valley, 206^-7^; nomenclature of, 

 216«-20«. 



Marine invasion, 201^-22. 



Marine limit, upper, 201^-6^ 



Marine shells on the Vermont shore, 

 213^-15^ 



Marsh, G. P., cited, 184». 



Martin, D. S., cited, 250«. 



Mather, W. W., cited, 133S 235% 

 250i^ 



Matthew, G. F., cited, 236^ 



Meadowdale stage, 128^-29^. 



Melosira granulata, 186^. 



Merrick, cited, 235% 



Merrill, F. J. H., acknowledgments 

 to, 67« ; cited, 223«, 250^-51% 



Mettawee river, delta of, 149^-50% 



Meunier, S., cited, 184^ 



Mitchella repens, 186^ 



Mohawk delta, 1'30'^-31». 



Montreal, fossils at, 209^-10% 



Moodna kill, terraces, 199^. 



Mooers, fossils near, 210*-11^ 

 Mooers quadrangle, shore lines of, 



172*-73% 

 Morton, S. G., cited, 251% 

 Moses kill, washed rocks near the 



mouth of, 197'-98*. 

 My a arenaria, 212^. 



truncata, 2,12% 

 Mytilus edulis,-212% 212% 212% 213% 



213% 216% 



Navicula gruendeleri, 186% 

 permagna, 186% 



New Hamburg glacial deposits, 

 119°-21% 



Newburg and related stages, sum- 

 mary of, 131^-33% 



Newburg stage, north and east of 

 New Hamburg, ice edge, 121% 



Newburg terrace, 116*-18% 



Nitzschia granulata, 186% 



Nomenclature of the marine de- 

 posits, 216^-20% 



North Albany gravels, 129^-30% 



North Argyle, morainal terrace at, 

 1425-43% 



Norwood, fossils at, 209^. 

 Nucula portlandica, 212% 

 Nyack terraces, preglacial, 95^-96% 



Ogdensburg, fossils at, 208^-9% 

 Ogilvie, I. H., cited, 251% 

 Organisms of the clays in the Hud- 

 sou river valley, 186'-87% 

 Osborn, H. F., cited, 228% 251% 

 Outwash plains, 90^. 



Palr^'^rtowTi mountain, terrace, 

 140- ; delta at base of, 147% 



Patten's Mills terrace, 141^-42% 



Pecten islandicus, 212^. 



Peekskill, terrace in, 109^. 



Peekskill bay, terraces about, 106^- 

 18% 



Peekskill cove, character of valley, 

 280% 



Peekskill creek terraces, 109^-11% 



Peet, G. E., cited, 213^ 251% 



Pelham, deposits near, 92% 



Perry, J. B., cited, 251% 



