University of North Dakota. 



48 — Portage Sandstone. Chemung Period. 



Portageville, N. Y. 



49 — Chemung Group. Chemung Period 



Elmira, N. Y. 



50 — Chemung Rock, with Dictyopliyton. Cliemung Pe- 

 riod, Devonian. 



Steuben Co., N. Y. 



51 — Panama Conglomerate. Chemung Period. 



Panama, N. Y. 



52 — Panama Cono-lomerate. Chemung Period. 



Panama, N. Y. 



53 — Catskill Period, Devonian. 



Delaware Co., N. Y.^ 



54— Old Red Sandstone. Catskill Period. 



Dura Den, Scotland. 



55 — Devonian Limestone. Catskill Period. 



Torquay, England. 



56 — Oolitic Limestone. Sub-Carboniferous Period. 



Bristol, England. 



57 — Waverly Sandstone. Sub-Carboniferous Period. 



Berlin, Ohio. 

 5S — Burlington Limestone. Sub-Carboniferous Period. 



Burlington, Iowa. 

 59 — St. Louis Limestone. Sub-Carboniferous Period. 



St. Louis, Mo. 

 60 — Carboniferous Conglomerate. Carboniferous Period. 



TTamjiden, Ojiio. 



61 — Millstone Grit. Carboniferous Period. 



Yorkshire, England. 

 62 — Millstone Grit. Carljonifcrous Period. 



Manel)ach, Thuringia. 



63 — Coal Shale. Carl)oniferous Period. 



Newport, R. L 



