ALTITUDES. 265 



Wolfeborongh Branch. Furnished by J. W. Levering, assistant engineer. 



Heights in feet. 



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



Railroad summit east of Cottonborough station, 664 



Lake \Vinnipiseogee, surface of water, October, 1871, .... 5OO.5 



&quot; March 26, 1872, . . . 498.26 



PIciglits along the Portland & Ogdcnsburgli 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 feet. 



Surface of Presumscot river, on ice, ...... 5.64 39 



Surface of Presumscot river, on ice, 13 13O 



Surface of Sebago lake, on ice, 17 263 



Steep Falls of the Saco river (village), 24.5 305 



Surface of the Saco river, at mouth of the Ossipee, ... 32 266 



Surface of Ingalls pond, near head of Great Falls, Saco river, . 35.4 350 



Fryeburg station, natural surface of plain, ..... 49.7 420 



Highway at state line, Maine and New Hampshire, . . 51 451 



Localities in New Hampshire. 



Saco river at railroad crossing, Conway Centre, .... 55.25 412 



Surface of North Conway village, terrace plain, .... 60 521 



Saco river at junction of the Ellis river, 64.5 511 



Saco river at junction of the Rocky Branch, .... 66 56O 



Surface of plain of Upper Bartlett village, 70.5 66O 



Saco river at line between Bartlett and Hart s Location, . . 72.5 745 



Surface of Sawyer s river at highway bridge, .... 74.2 863 



Surface of Nancy s brook at highway bridge, .... 76.2 1OO3 



Highway at Willey house, 82.2 1323 



South end of gate of notch, 84.3 1819 



Crawford house, 85 1899 



Highest grade near Crawford house, 1893 



VOL. I. 36 



