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Lower Silurian. Trenton Limestone
Hudson=river group & Clinton Group

Flambowugh Head, Canada west
Trenton falls, Middleville, Jacksonburgh,
Watertown, Lowville, Turin, Plattsburgh,
[Chasy?], Glen'sfalls, Lorraine, Pulaski and othe localities in
the Mohawk, Champlain & Black=river
vallies, Sodus, N. York. Rochester & Lockport N.Y.

Cincinnati Ohio. Beloit, Beetown,
and Mineral Point Wisconsin. I.A.L.

Fals of St Anthony, Minnesota.

Bay St Paul, Canada

Middle Tennessee

Ottawa river, Canada

Bay du Noquet, Mich & Escanauba
R. 2 miles below Indian Cr. Mich

Penna

Scules Mound, Ill - in Galena Limestone