ALTITUDES. 



265 



Madison, north-west end of Six-mile pond (Silver lake), 



Summit 2 miles beyond, 



Conway Corner (Chateaugay) , west end of village, 

 Crossing Saco river, summer level, 

 North Conway station, ..... 



Jackson, on the road between the two bridges, . 



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



Heights in feet. 



574 

 664 



Wolfeborough Junction, 49.5 miles from Portsmouth, 

 Railroad summit east of Cottonborough station, 

 Lake Winnipiseogee, surface of water, October, 1871, 

 " " " " March 26, 1872, 



500.5 

 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. 



Surface of Presumscot river, on ice, 



Surface of Presumscot river, on ice, 



Surface of Sebago lake, on ice, .... 



Steep Falls of the Saco river (village), 



Surface of the Saco river, at mouth of the Ossipee, 



Surface of Ingalls pond, near head of Great Falls, Saco river, 



Fryeburg station, natural surface of plain, . 



Highway at state line, Maine and New Hampshire, 



Localities in New Hampshire 

 Saco river at railroad crossing, Conway Centre, 

 Surface of North Conway village, terrace plain, 

 Saco river at junction of the Ellis river, 

 Saco river at junction of the Rocky Branch, 

 Surface of plain of Upper Bartlett village, . 

 Saco river at line between Bartlett and Hart's Location 

 Surface of Sawyer's river at highway bridge, 

 Surface of Nancy's brook at highway bridge, 



Highway at Willey house, 



South end of gate of notch, 



Crawford house, 



Highest grade near Crawford house, 

 VOL. I. 36 



