Niagara Falls 



U. S. — War Department . . . Preservation of Niagara Falls. Message 

 from the President . . . transmitting a letter from the secretary of war, 

 submitting additional information concerning the operation of the United 

 States Lake Survey from June 29, 1906, to June 29, 1911. Wash.: 

 Gov. print, off. 1911. (U. S. 63d Cong. 2d sess. House, doc. 

 246.) XI 



War Department . . . Preservation of Niagara Falls. Message 



from the President . . . transmitting a letter from the secretary 

 of war, submitting additional information concerning the operation of 

 the United States Lake Survey from June 29, 1 906, to June 29, 1911. 

 Wash.: Gov't print, off. 1911. (U. S. Cong., 2d sess. House 

 doc. 246.) 



— War Department . . . Preservation of Niagara Falls. Message 



from the President . . . transmitting information relative to scientific 

 investigations made by certain officers of the War Department, for the 

 preservation of Niagara Falls . . . Wash.: Gov't print, off. 1911. 

 (U. S. 62d Cong., 1st sess. Sen. doc. 105.) XI 



Unonius, Gustaf. Minnen fran en Sjuttondrig vistelse i Nordvestra 

 Amerika. Andra Upplagan, Upsala: W. Schultz. 1862. Pt. II, 

 pp. 405-412 IV 



United States and Canada, as seen by two brothers in 1858 

 and 1861. Lond.: Edward Stanford. 1862. Pp. 84-89. 



Unwin, W. Cawthorne. [Discussion of Prof. Forbes's paper on 

 the Niagara project.! (Jour. soc. arts, Dec. 16, 1892. 41 :97-98.) 



— — Mechanical energy and industrial progress. (Cass. July, 1895. 



8:195-200.) X 



The Niagara Falls power stations. (Proc. inst. M. E. (Lond.:) 



1906. Pp. 135-148.) X 



Upham, Warren. The age of Niagara Falls as indicated by the 

 erosion at the mouth of the gorge. (Sci., Oct., 1898. n.s. 8: 

 502.) VII 



— — Geological history of the Great Lakes and Niagara Falls. (Inter- 

 nal!, q., July, 1905. 1 1 : 248-265.) VII 



Niagara as a measure of post-glacial time. (Rec. past, Sept., 



1908. 7: 244-246.) VII 



Niagara gorge and St. David's channel. (Geol. Soc. of Am. 



bulletin. Jan. 25, 1898. 9:101-110.) VII 



The Niagara gorge as a measure of the post-glacial period. (Am. 



geol. July, 1894. 14: 62-65.) VII 



Niagara river since the ice age. (Nature, June 28, 1 894. 



50:198-199.) VII 



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