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, . 



Distances from 

 Portsmouth. 



69.5 " 



71-3 " 



76.6 " 

 80 " 

 82 " 

 90 " 



Heights 

 in feet. 



476 

 516 

 466 

 446 

 516 

 759 



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



Wolfeborough Junction, 49.5 miles from Portsmouth, 

 Railroad summit east of Cottonborough station. 

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

 " " " " March 26, 1872, 



Heights in feet, 



574 

 664 

 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. 



Distances Heights 

 in miles. in feeL 



Surface of Presumscot river, on ice 5.64 39 



13 130 



17 263 



24.5 305 



32 266 



35-4 350 



49.7 420 



SI 451 



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, 

 Siuface 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 



SS-2S 



60 

 64.5 



66 



70.S 



72.S 



74.2 



76.2 



82.2 



84-3 



8S 



412 



521 



511 



560 



660 



745 



863 



1003 



1323 



1819 



1899 



1893 



