40 



Case A, on the left as you enter. (Panel 3 and 4) : A Geo- 

 logical Map of New-York State, illustrating the classification gen- 

 erally adopted. Below are volumes published by the State Survey, 

 illustrating the fossils of the several formations of the State, most 

 of the specimens figured in them being on exhibition in the Hall. 

 Such type specimens are indicated by green tickets, and illustrate 

 the scientific importance of this collection. (1 and 2) : Rocks and 

 Minerals of the Laurentian Period. (5) : Of the Huronian, and in 

 6, Rocks representing the geology of New York Island. 



Case B. (L^t) : and adjoining Table Case, contains 200 types 

 and figured specimens of Fossils from the Potsdam formation of 

 America. Other parts of this and the following cases are filled 

 with specimens illustrating the various formations, as follows : 



CaseB. (6-7): Calciferous. (8-10): Canadian. (11-13): 

 Chazy, Birds-eye and Black-River. 



CaseC. d-7): New York Trenton. (7-13): Western Trenton. 



Case D. (1-2): Utica Slate. (3): New York Hudson Kiver. 

 (4-10) : Western Hudson River. (11) : Medina. (12-13) : Clinton. 



Case E. (1-2): Clinton. (3-10) : New York Niagara. (11-13): 

 Niagara of Indiana. 



Case F. (1-6): Western Niagara. (7): G-nelph Limestone. 

 (8): Onondaga Salt Group. (10-13): Lower Helderberg. 



Case G. (1-3): Remainder of Lower Helderberg. (4-8): Oris- 

 kany Sandstone [opposite Table Case, Oriskany of Maryland.] 

 (9-12): Schoharie Grit. (13): Corals of New York Upper Helder- 

 berg. 



CaseH. (1-6): New York Upper Helderberg. (7-11): West- 

 ern Upper Helderberg. (12-13): Marcellus Shale. (13, upper 

 part) : Plants of Hamilton Group. 



Cases I and J, and (1-3) in Case K, New York Hamilton. And 

 (4-6) Western Hamilton. 



Case L. (1-3): Tully Limestone, G-enessee Slate and Portage 

 Group. (4-13) : Chemung Group. 



Case M. (1-2): Chemung Group. (3-4): Catskill. (5-10): 

 Waverly Group. (11 and 12) : Lower Carboniferous Limestones, 

 Burlington Division. (13) : Keokuk Division. 



