reviews 357 



Summary Report of the Geological Survey Department [of Canada] 

 for the Year i goo. Ottawa, 1901. 

 Among the more interesting features of the work of the year are 

 (1) a series of experiments in separating the magnetic element from 

 black auriferous sands by a magnetic separator, and thereby concen- 

 trating the gold in the non-magnetic residues (collected by J. C. 

 Gwillim, treated by J. B. Porter); (2) the discovery of salt at St. 

 Gregoire in a red formation referred to the Medina, which throws light 

 on the conditions attending the origin of that formation in common 

 with other red sand and marl deposits ; (3) a survey by J. McAvoy of 

 the Crows Nest coal field, which is estimated to contain over 

 22,000,000,000 tons of workable coal of excellent coking qualities 

 and low percentage of ash or other deleterious substances ; (4) addi- 

 tional discoveries of Cretaceous coal in northern British Columbia, 

 indicating that "the coal-bearing Cretaceous rocks occupy a much 

 larger area than had been supposed between the 55th and 57th parallels 

 of latitude, while anthracite coals have actually been found in the 

 region about the head-waters of the Skeena and Stikine rivers" (J. S. 

 O'Dwyer and A. H. Dupont); (5) a further report on the Klondike 

 district, dealing with its indurated series and its gravels, gold and 

 copper deposits, lignites, and glaciation (R. G. McConnell); (6) the 

 exploration by J. C. Gwillim, of the Atlin district (about 6o° lat. and 

 1 34 long.); (7) additional results in the Kootenay district; (8) an 

 outline of explorations, by J. M. Bell, about Great Bear Lake and 

 Great Slave Lake ; (9) a brief statement of work on the crystalline 

 area northwest of Lake Superior, by William Mclnnes; (10) a report 

 of work north of Lake Superior, by Robert Bell, relating especially 

 to iron ore developments; (11) studies, by W. A. Parks, in the 

 Muskoka district; (12) examination of the region south and east of 

 Ottawa, by Dr. Ells; (13) studies in the vicinity of Montreal, by 

 O. E. LeRoy; (14) the examination of Shefford Mountain, by J. A. 

 Dresser; (15) work in the Lake St. John district, by G. A. Young; 



(16) work on the great slate belt of New Brunswick, by L. VV. Bailey, 

 in which fossils indicating Ordovician and Cambrian ages were found ; 



(17) investigations on the surface geology of northwestern New 

 Brunswick, by R. Chalmers; (18) work in Nova Scotia on the coal 

 field, by H. Fletcher and M. H. McLeod, and on the gold field by Mr. 

 E. R. Faribault; (19) outlines of chemical, paleontological, and 

 natural history investigations. 



