RECORDS OF MEETINGS OF 190S 



455 



joining regions in Canada and Ohio have demonstrated the existence of 

 about 900 feet of fossiliferous strata- above the Salina, to which it is proposed 

 to restrict the name Monroe. These will be fully discussed in a forthcoming 

 paper, where the correlation of the eastern attenuated Upper Siluric beds 

 will be given. The fauna of the Upper Monroe, above the Sylvania sand- 

 stone, is a remarkable mixture of Siluric and Devonic types, as recently 

 demonstrated before the Michigan Academy of Sciences, the Chicago meet- 

 ing of Section E, American Association for the Advancement of Science, 

 and the Albuquerque meeting of the Geological Society of America. The 

 following classification of the Siluric System of North America is proposed 

 as most expressive of the relationships indicated by the facts now known: 



Upper Siluric 

 or 

 Monroe 

 (900 feet) 

 Middle Siluric 

 or 

 Salina 

 (1000 feet) 

 Lower Siluric 

 or 

 Niagara 

 (500 feet) 



Upper Monroe 



Middle Monroe (Sylvania sandstone the only known repre- 

 sentative) 

 Lower Monroe 



Represented so far as known only by non-marine sedi- 

 ments 



Guelph (probably to be placed in with the Middle Siluric) 

 Lockport dolomite 

 Rochester shales 



f Clinton shales and limestones 

 Clinton -j Medina sandstone 



[Oneida conglomerate 



This paper was illustrated with lantern slides. 



Dr. Julien's paper appears in full as pages 129-146 of this volume. 

 The paper was illustrated with several ingeniously prepared charts and 

 aroused much interest, but, because of the lateness of the hour, the discus- 

 sion was postponed to the next regular meeting of the Section. 

 The Section then adjourned. 



Charles P. Berket, 



Secretary. 



