LETTER OF TRANSMITTAL. 



Department of the Interior, 

 U. S. Geological Survey, Archean Division, 



Newport, R. I., January 18, 1892. 

 Sir : I have the honor to transmit herewith a memoir on the Geology 

 of the Green mountains in Massachusetts. 



Your obedient servant, 



Raphael Pumpelly, 



Geologist in charge. 

 Hon. J. W. Powell, 



Director U. 8. Geological Survey. 



