62 The Ottawa Naturalist. [May 



division oi the Laramie," when in fact the adopted names is Pas- 

 kapoo beds. Certain crystalline limestones in the Yale district 

 (p. 202) are said to occur west of Lansdowne, at Adams Lake, 

 whereas that lake is fifty miles 7torth of Lansdowne. 



Triassic rocks occur, also according to the author, in British 

 Columbia, Vancouver and the Queen Charlotte Islands ; and 

 Jurassic, in the Arctic archipelag'O. The Cretaceous, larg'cly 

 developed in Manitoba, the Northwest and British Columbia, 

 includes important coal fields. 



The'Quaternary deposits he divides into three periods ; the 

 Glacial or boulder clays ; the Champlain or marine clays deposited 

 during" a period of submergence ; and the Recent or terrace period 

 of elevation. 



He introduces three difi^erent names for the boulder clays: — 

 the Labrador formation for the boulder clay of the Laurentide 

 glacier or glaciers ; the Rupert formation for that of the Keewatin 

 glacier ; and the Cordilleran formation for the product of the Cor- 

 dilleran ice sheet. These names are of no practical use, and, 

 moreover, are misleading and tend to confusion. For example, 

 how is it to be known from the term Rupert formation that it is a 

 boulder clay, without referring to Dr. Ami's paper? No geologist 

 has used any other term than the descriptive one of boulder clay 

 or till for the product of Pleistocene ice. As well might the Trias- 

 sic be given difTerent local names in different parts of Canada. 



Dr. Ami also adopts the term Champlain, presumably suppos- 

 ing it to be the equivalent of the Leda clay and Saxicava sands. 

 This is a name not in common use north of the International 



boundary, simply because neither the upper nor the lower limits of 

 the deposits classed under that term as defined by Hitchcock and 

 Dana correspond with those of the marine beds of the St. Lawrence 

 valley and Maritime provinces. The two geologists referred to 

 have made the Champlain a glacial formation, but in Eastern Can- 

 ada no deposits attributable to ice action have been met with in 

 the Leda clay and Saxicava sands. Further, the fossils they 

 contain are really identical with torms now living in the northern 

 part of the Gulf of St. Lawrence and on the east coast of the Lab- 

 rador peninsula, where no glaciers exist at the present day. 



Only in the most recent of our superficial deposits have traces 

 of the aborigines been found, together with their stone or copper 

 implements and remains of beaver, deer, bear and other animals of 

 the chase identical with those of to-day, H. F. 



