LETTER OF TRANSMITTAL. 



University of Chicago, 



CJiicayo, III., March <S, 1894. 



SiE : I luive the honor to trau.siiiit herewith, for pubhcation as a 

 monograph of the United States Geological Survey, the manuscript of 

 a report on the Glacial Lake Agassiz, by Mr. Warren Upham. I am 

 confident that it will be welcomed by the scientific world as a valuable 

 contribution to the literature of North American glaciology. 

 Very respectfully, 



T. C. Chamberlin, 



Gcolof/isi in. Charge 

 To the Director United States Geological Survey. 



XVII 



MON XXV II 



