ALTITUDES. 265 



Distances from Heights 

 Portsmouth. in feet. 



Madison, north-west end of Six-mile pond (Silver lake) , . . 69.5 " 476 



Summit 2 miles beyond, 7 r -3 " 516 



Conway Corner (Chateaugay) , west end of village, . . . 76.6" 466 



Crossing Saco river, summer level, 80 " 446 



North Conway station, 82 " 516 



Jackson, on the road between the two bridges, . . . 90 " 759 



Wolfeborough Branch. Furnished by J. W. Lovering, assistant engineer. 



Heights in feet. 



Wolfeborough Junction, 49.5 miles from Portsmouth, .... 574 



Railroad summit east of Cottonborough station, ..... 664 



Lake Winnipiseogee, surface of water, October, 1871, .... 5OO.5 



" " March 26, 1872, . . . 498.26 



Heights along the Portland & Ogdensburgh Railroad. Furnished by 

 John F. Anderson, engineer, and reduced to mean tide. Initial point of 

 distances at the west end of P. & K. Railroad Company's freight house, 

 in Portland, Me. 



Localities in Maine. 



