322 The American Geologist. November, 1901. 
molllc'il linicstopc. about 70 feet thick; the Cat Head limestone, also 
about 70 feet, and an npjjer mottled limestone about too feet; and the 
Stony ATcnuitain limestone and shales, probably of the Utica age, 1 10 
feet. The Ixndder clay, or till, attains a maxinnun thickness of nearly 
100 feet; and on some of the islands and shores it forms low drumlin 
ridges, running southward, parallel with the course in which the ice- 
sheet flowed. 
The next part (G). in 98 pages, is a report on the east shore of 
this lake Winnipeg, with adjacent districts of Manitoba and Kewatin 
compiled by Mr. Dowling from notes and surveys by Mr. J. Burr Tyr- 
rel. This side is in marked contrast to the west, as the rocks are 
wholly Archean, the preponderance of gneisses and granites of the 
Laurentian being the chief feature. There are also large areas of strati- 
fied clay and silt, deposited in the glacial lake Agassiz, having a rich 
soil, covered with poplar and spruce forests. 
Dr. R. W: Ells reports, in 70 pages (J), on the geology of the 
Three Rivers map sheet, which is the northwestern sheet of the "East- 
ern Townships" of Quebec. It comprises nearly 7,000 square miles, 
mostly yet unsettled, with no means of communication excepting by 
canoe and portage routes. The rock formation range from the Silurian 
to the Archean. Pleistocene marine shore lines are stated by Chal- 
mers to occur u]) to bights of about 500 to 900 feet, showing differen- 
tial postglacial elevation of the land, the maximum slopes of the high- 
est beaches being about two feet to the mile, rising from east to west. 
An exploration of a part of the south shore of Hudson strait and 
of Ungava bay is reported by Mr. A. P. Low, in 47 pages (L) ; and a 
similar report on the northern side of Hudson strait is supplied in 
Part M, 38 pages, by Dr. Robert Bell. These reports are accompanied 
by a map, on the scale of 25miles to an inch, colored to show the rock 
formations along these coasts. 
Dr. G. C. Hoffmann, chemist and mineralogist to the Survey, re- 
ports his work for the year in Part R, 55 pages ; and the Scection of 
Mineral Statistics and Mines in charge of Mr. E. D. Ingall, is reported 
in Part S, 196 pages. The total value of metallic products was $21,- 
705,854, l)eing eight times greater than in 1888, ten years earlier; attd 
of non-metallic products, $38,661,000, being thrice greater than ten years 
before. W- ^'• 
Contributions to Mineralogy and Fctrograpliy, Slicfhchi Scientific 
Scliool. Edited by S. L. Penfiei-D and L. V. Pirsson. Octavo, 
pp. 482. New York. Charles Scribner's Sons. 1901. 
This volume is composed, essentially of reprints of papers by 
Brush, the two Danas, Penfield and Pirsson, professors at Yale col- 
lege, and by numerous young men -.vho have been associates at that 
institution, viz. Hawes, Wells, Allen, Comstock, Harper, Meyer, Far- 
rington, Pratt, Howe, Minor, Foote, Warren. Ford, Weed and Greg- 
orj'. It also contains a sketch of the progressive development of min- 
eralogy and petrography at Yale, complete bibliographies of the papers 
