I goo] Reviews. 251 



The strata are highly fossiliferous and the palajontological evi- 

 dence presented seems to prove that the seas in which the Niagara 

 sediments of the Winnipeg basin and of Hudson Bay were depos 

 ited were practically continuous, while both were separated from 

 the Temiscaming basin and the region to the south west. 



The Pleistocene history of the region seems to consist of a 

 period of glaciation by a great ice sheet followed by profound sub- 

 mergence, during which time the ocean invaded a large portion 

 of the Ottawa Valley forming a marine gulf rivalling in extent the 

 similar invasions of the sea in Palaeozoic times. The direction of 

 motion of the ice varies from S. 7 W. to S. 18' W. 



The report also contains much information concerning the 

 fauna, flora and timber resources of the district, and has appen- 

 dixes giving lists of elevations and catalogues of the Palaeozoic 

 fossils. 



F. D. Adams. 



Canadian Geological Nomenclature. By Dr. R. W. Ells. 

 Trans. Roy. Soc. Can., Vol. V, 2nd Ser. , Sec. IV, pp. 3 — 38. 



In this important contribution to the Science of Geology, Dr. 

 Ells, as president of Section IV of the Royal Society of Canada, 

 discusses the problems still existing in Canadian geology, the new 

 names added to the geological nomenclature of Canada, the 

 history and development of the present classification employed in 

 this country, followed by a discussion ot the nomenclature in "the 

 Great Archsen Complex with its vast series of overlying palceozoic 

 sediments reaching upward in the geological scale to the Triassic 

 formations " included in that portion of Canada, east of the Red 

 River of Manitoba. Dr. Ells indicates clearly the various terms 

 used in Nova Scotia and New Brunswick as well as in Ontario and 

 Quebec. 



It may not be deemed out of place here however to point out 

 that, for instance, such names as " Dadoxylon sandstone," 

 "Cordaile shales" and " iMispec group," as applied to the Devon- 

 ian formations, are not, in the strict acceptance of the word, for- 



