LETTER OF TRANSMITTAL. 



Amherst College, 

 Amherst, Mass., March 4, 1895. 

 Sir: I have the honor to transmit herewith tlie manuscript of a geo- 

 logical description of the three counties in Massachusetts through which the 

 Connecticut River runs, and which include nearly the whole of that por- 

 tion of its drainage area which lies within the limits of the State. 



The studies here presented began in 1873. The results were offered to 

 the United States Geological Survey in 1887, and were accepted at that 

 time. A small portion of the area has since been reexamined, under the 

 direction of the Survey, and the map has been extended a little beyond the 

 limits of the State north and south, to cover the whole of the area repre- 

 sented on the topographic sheets employed. In this work I have been 

 assisted by Mr. William Orr, jr., of Springfield, who has mapped jmrt of the 

 limestone and amphibolite bands of the Conway schist, and by Mr. Fred- 

 erick B. Peck, who traced the western boundary of the Shelburne anticline 

 and worked on the southern border of the area mapped on the Granville 

 sheet. 



As the work was mostly done before the appearance of the topographic 

 maps issued by the Survey, many allusions to names found upon county 

 atlas maps remain. 



Very respectfully, yom- obedient servant, 



B. K. Emerson, 



Geologist. 

 Hon. Charles D. Walcott, 



Director United States Geological Survey. 



