LETTER OF TRANSMITTAL. 



Department op the Interior, 



United States Geological Survey, 



Washington, D. C, June 8, 1897. 

 Sir: I have the honor to transmit herewith the manuscript and plates 

 of a. posthumous work on the Later Extinct Floras of North America, by 

 Dr. John Strong Newberry, edited by Dr. Arthur Hollick, and to request 

 its publication as a monograph of the Survey. 

 Very respectfully, 



F. H. Knowlton, 



Assistant Paleontologist. 

 Hon. Charles D. Walcott, 



Director. 



