198 Canadian Record of Science. 



There remains, however, yet to be shown what rock-formations and 

 fossiliferous sediments of Nova Scotia there exist (if any) which are of 

 true Devonian age, besides the marine Devonian strata of the Siluro- 

 Devonian area and axis of Annapolis and Kings Counties in that 

 Province. 



H. M. Ami. 



Book Notices. 



Repo:6t on the Geology and Natural Resources of the area 



INCLUDED BY THE NiPISSING AND TeMISCAMING MaP ShEETS, COMPRIS- 

 ING PORTIONS OF THE DISTRICT OF NiPISSING, ONTARIO, AND OF THE 



County of Pontiac, Quebec. By Alfred Ernest Barlow, M.A., 

 Geological Survey of Canada. Parti., Annual Report, Vol. X., 1899. 

 pp. 301. 



This report, accompanied by two well executed maps on a scale of 

 four miles to the inch, and covering an area of 6912 square miles of the 

 northern Protaxis of the Dominion of Canada, is a valuable addition to 

 the literature of the Pre-Cambrian of North America, and is a further 

 instalment of the work which is being systematically carried forward 

 by the Dominion Geological Survey on these older rocks. The two 

 maps, constituting what are known as sheets Nos. 131 and 138 of the 

 Canadian Series, lie in the Upper Ottawa district along the border of 

 the two Provinces of Quebec and Ontario, and comprise portions of 

 both. Lake Nipissing and Lakes Temagami, Temiscaming and Keep- 

 awa, as well as many small bodies of water, are included in the 

 area, and afford along their shores especially good opportunities for the 

 prosecution of geological work. 



After presenting a general account of the early explorations in this 

 region, some of which date back almost to the time of the earliest set- 

 tlement of the country by the French, and of previous surveys, the 

 Physical Features of the country are described. The area is a great 

 uneven or gently undulating rocky plateau, sloping somewhat to the 

 east and south-east, having a general elevation of 900 to 1200 feet 

 above sea level, the level being so nearly uniform that hills 50 to 100 

 feet higher are conspicuous topograpiiical features. This peneplain 

 is traversed in a north and south direction along one line by a very 

 deep and narrow rocky gorge, in which lie Lake Temiscaming and the 

 Ottawa River. The hills or cliffs rise to a height of 400 to 600 feet 

 from the water on either side, while the water of the lake is 400 feet 

 deep, tlie bottom of the gorge being filled witli a fine silt. The depres- 

 sion is thus at least 1000 feet deep and represents a great canon similar 

 to those which are found on the margin of tlie northern I'rotaxis at so 



