Publisher's Synopsis
Excerpt from Preservation of Niagara Falls: Message From the President of the United States, Transmitting Information Relative to Scientific Investigations Made by Certain Officers of the War Department for the Preservation of Niagara Falls
The project of April 30, 1907, for the expenditure of the allotment of above mentioned, therefore covered field operations, which included investigations of hydraulic conditions by means of measurement of ?ow, by observations of profiles, by soundings, and by ascertainment of current lines, at and immediately above the Falls.
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