758 REVIEWS 
Devonian epoch, migrated from Central Europe to America where 
they are now presented in the middle Devonian.” 
Dr. Katzer’s study of these Brazilian fossils is especially interesting 
in connection with the work of Dr. Henry S. Williams on the fauna of 
the Cuboides Zone. (Bull. G. S. A. I. 481-500.) 
Joun C. BRANNER. 
Report of the United States Deep Waterways Commission. By the 
Commissioners JAMES B. ANGELL, JOHN F. RussELL, LYMAN 
E. CooLey. Washington, 1897. 
The Deep Waterways Commission was appointed by the President 
in response to a joint resolution of Congress, introduced in February 
1895, to make inquiry and report after conference with such similar 
Commissioners as might be appointed on behalf of Great Britain or 
the Dominion of Canada, concerning the feasibility of the construction 
of canals which will enable vessels engaged in ocean commerce to pass 
into the Great Lakes. The United States Commissioners and also 
those appointed by the Canadian government have devoted a year or 
more to the investigation and have prosecuted their inquiries with such 
thoroughness that their report contains much of value to geologists 
and hydrographers as well as the commercial world. It embraces 263 
pages of descriptive and statistical matter and an elaborate series of 
maps, diagrams and profile sections. 
Of interest to geologists and hydrographers are the tables and dia- 
grams exhibiting the fluctuations in the levels of the Great Lakes and 
their outlets for each month from 1860 to 1895; a report and dia- 
grams setting forth the effects of gales on Lake Erie ; and an accurate 
map of the basin of the Great Lakes. The length of the ice season is 
treated with great fullness, there being 176 specific tables and five dia- 
grams, covering not only the basin of the Great Lakes but much sur- 
rounding territory. The profiles setting forth the variations in depth 
of the several lakes with their connecting channels and of the St. Law- 
rence and Hudson rivers, give a clearer impression than can be obtained 
from charts. The great inequalities in depth found in the lower por- 
tions of the Hudson and St. Lawrence rivers are brought out with 
especial clearness, and they will stimulate inquiry into the history or 
mode of development of such abnormal stream beds. 
