816 Canadian Record of "Science. 



exceedingly detailed and careful examination before satis- 

 factory conclusions are arrived at. 



The rocks forming the Citadel Hill or promontory of 

 Quebec (Cape Diamond) have been assigned to different 

 positions in the geological scale by different writers at 

 different times. An elaborate review of these views is given 

 in Dr. Ells' last report to Dr. Selwyn (1888) published by 

 the Geological Survey of Canada, which includes from Dr. 

 Bigsbj-'s paper published in 1827, down to Prof. Lapworth's 

 Report, etc., published in the Transactions of the Eoyal 

 Society of Canada for 188*7. 



The rocks of Quebec ha^e been referred by some of the 

 geologists above named to the age of the Quebec Group 

 (Levis Division) whilst others, and the majority at present 

 regard them as newer than the Trenton limestone, viz. : 

 being of "Trenton-Utica," "Utica- Hudson," or "Lorraine" 

 age. But before assigning a definite position to the rocks 

 of Quebec City in the scale of terranes in America, it is 

 necessary for the writer to state that, so far, he has been 

 unable to find any evidence in the field, either stratigraphical 

 or palteontological, whereby the " Hudson Biver " rocks 

 and "Lorraine *' shales, as originally understood by Emmons, 

 could be correlated, or referred to the same or immediately 

 following geologic terrane. 



The fauna of the Norman's Kiln shales, that of the 

 Marsouin, of the Tartigo River, Griffin Cove and Gagnon's 

 Beach Rocks, as well as that from Crane Island, N. W. or 

 False Point of the Island of Orleans, Quebec City, Etcheraiu 

 River, between St. Henry and St. Anselme, Drummondville, 

 and other localities in Maine, Vermont, and New York 

 States constitutes one large assemblage of forms peculiar to 

 one terrane. 



The fauna of the Lorraine shales, (Cincinnati era in part) 

 on the other hand, as it is characterized at Montmorency 

 Falls, Cote Sauvageau, in the St. Charles Valley near Quebec, 

 at Charlesbourg (near the Church), two miles above St. 

 Nicholas, Yamaska River, Riviere d es Hurons, and in the 



