22 PHYSICAL GEOGRAPHY. 



small appropriation compared with the sum estimated by the commis- 

 sioner in 1854. A letter was accordingly addressed to His Excellency 

 the Governor, and the Honorable Council, in which the foregoing facts 

 were recited, and the proposal was made that, without asking for any 

 additional appropriations, the geologist would cause a new map of the 

 state, upon the scale of two and a half miles to the inch, to be prepared, 

 and that this work might be considered as involved in the act authorizing 

 the survey. The council approved of this proposition May 13, 1869; and 

 since that time measures have been taken to prepare the map, in connec- 

 tion with the other work. 



Topographical Work Performed. 



The most important topographical work performed this year is embodied 

 in a report by Prof. E. T. Ouimby, of Dartmouth college, most of which 

 is presented in the chapter upon topography. 



Next should be mentioned the labors of Mr. Vose. He spent a few 

 weeks among the White Mountains, taking a large number of observa- 

 tions for the purpose of fixing the exact position of many of the high 

 mountain peaks. His observations serve to fix the latitudes and longi- 

 tudes of Mt. Passaconnaway, Waterville ; Mt. Pequawket, Chatham ; Mt. 

 Whiteface, Waterville ; and Mt. Chocorua, Albany. From Mts. Pequaw- 

 ket and Chocorua, Mr. Vose drew accurate sketches of all the mountains 

 as seen along the New Hampshire horizon. The instrument used was a 

 six-inch theodolite, kindly loaned for the purpose by the United States 

 Coast Survey. Mr. Vose also made observations upon the geology of 

 the region, which were mostly printed in the report for 1871. In the 

 month of August he resigned his position on the survey. 



During all the seasons of field work our parties have been supplied 

 with county maps, and have carefully noted the changes or alterations 

 required for the perfection of the general map. These will be embodied 

 upon our large geological map. For the sake of determining the forma- 

 tions in the Ammonoosuc gold field with accuracy, we commenced during 

 this season a topographical survey of a few square miles of the most 

 valuable portion, upon the scale of five hundred feet to the inch. With 

 the aid of J. H. Huntington, A. C. Page of Center Harbor, and A. A. 



