1 6 PHYSICAL GEOGRAPHY. 



economical results of the survey, but are anxious to understand the causes 

 of the elevation of the mountains, of the immense foldings and erosions 

 of the solid ledges, the filling of the rock crevices with metallic ores, 

 and the formation of the soils. 



As soon as possible our corps of observers was organized by the 

 appointment of George L. Vose of Paris, Me., and J. H. Huntington of 

 Norwich, Conn., as assistant geologists, and of Prof. E. W. Dimond of 

 Hanover, as chemist. 



Unforeseen circumstances prevented either of the geologists from 

 entering the field till the spring of 1 869. It seemed best to give each of 

 them a special subject, or a definite area, to investigate. Accordingly the 

 White Mountain region was assigned to Mr. Vose, and the principal part 

 of Co5s county to Mr. Huntington. Mr. Vose was expected to pay spe- 

 cial attention to the topography, and, in addition to the delineation of the 

 geological structure, to furnish the most accurate map of the mountain 

 region ever drawn. 



Inasmuch as Professor Dimond has been continually occupied by other 

 matters, he has not been able to act as chemist for the survey at any 

 time. His place in this respect has been supplied by Professor Charles 

 A. Seely, of New York, and also, to a small extent, by Professor B. T. 

 Blanpied, of the New Hampshire College of Agriculture and the Me- 

 chanic Arts. 



The third month's exploration was in May, 1 869. Its beginning found 

 Messrs. Vose and Huntington, with myself, in the field, engaged in deter- 

 mining the limits of the gold field in the towns of Littleton, Lyman, 

 Lisbon, Bath, Monroe, Landaff, and Haverhill. There has been little 

 modification of the results attained at that time, save in greater precision ; 

 and no portion of our territory has received so much attention as this. 



The report proceeds to give the history of the discovery of the gold in 

 this valley ; a full description of the Dodge gold mining property, with 

 assays ; a notice of other supposed auriferous openings, with an affirma- 

 tive answer to the question whether it will pay to mine for gold in New 

 Hampshire. All these points will be again stated, with additions. 



In this pamphlet there appears a colored geological map of the most 

 interesting part of the gold field, in which, with the accompanying descrip- 

 tions, may be discerned the germ of our peculiar notions respecting the 



