Bibliographical Notice. 467 
centre. It includes exposures of all the Paleozoic formations from 
the base of the Potsdam Sandstone up to the Medina Shales. Many 
of the strata are highly fossiliferous. 
Report I.—On the Iron-Ore Deposits along the Kingstown and 
Pembroke Railway in Eastern Ontario, by E. B. Ingall, 1901. 
Numerous borings, mines, and mineral products in the Counties of 
Frontenac, Lanark, Renfrew, and Leeds are described, and illus- 
trated by plans and a general geological map of the district. An 
Appendix, very useful to petrologists, by A. E. Barlow, on the 
microscopic examination of twenty-five rocks associated with the 
ores is added. And there is a large table of localities and analyses 
of the magnetites and the hematites. 
Report J.—-The Geology of Parts of the Provinces of Quebec 
and Ontario, by R. W. Ells, 1901. After careful consideration 
of the earlier opinions on the rocks of this great area of nearly 
4000 sq. miles in extent, it is concluded that there is evidence to 
show that much of what was described in earlier Reports as altered 
sedimentary rocks must now be accepted as altered igneous rock. 
This includes the greater bulk of the gneissic Laurentian Rock, also 
much of the pyroxenic and felspathic rocks, and of the white binary 
granites or pegmatites often associated with the crystalline lime- 
stones. The latter, however, and their associated whitish quartzites, 
as also certain reddish-grey and black gneisses, may be safely taken 
as representing true sediments, but highly metamorphosed.—The 
geological structure is described in detail throughout the district 
topographically ; and good photographs of contorted limestone and 
gueiss are given in plates iii. and iv. Then the several geological 
formations (as Utica, Trenton, Black-River, Chazy, Calciferous, and 
Potsdam) are successively treated as exposed in the district under 
notice. The apatite, asbestos, graphite, iron-ores, mica, barite, 
felspar, building-stone, &c. are described as to their occurrence and 
associated rocks, and orderly lists of the Fossils from the local 
exposures are added by H. M. Ami. 
Report M.—On the Surface Geology shown on the Federicton and 
Andover Quarter-sheet Maps, New Brunswick, by R. Chalmers, 
1902. This Report carefully describes the physiographic features, 
changes of level, denudation, glaciation and its results, the inland 
and the marine and freshwater deposits (recent), the soils, and forests. 
The useful minerals found in the district are also noticed. 
Report O.—Notes on certain Archean Rocks of the Ottawa Valley, 
by A.Osann. Translated from the German by N. N. Evans, 1902. 
Certain gneisses in the neighbourhood of Ottawa are described in 
detail, and compared with other rocks of the same kind. The 
occurrence of Apatite and Mica north of Ottawa is fully treated. 
The bibliography of the former, its discovery, nature, and origin, is 
given. It occurs as veins in the gneiss, and is always accompanied 
