ALTITUDES. 



273 



Hillsborough Branch Contoocook Valley Railroad. 



Distances from tt • -l. • r \^ 



Concord. He.glits m feel. 



Contoocook 12 miles. 373.38 



West Hopkinton, 15 " 391 79 



Crossing of old N. H. Central Railroad, Henniker, . . 426.29 



Henniker 20 " 439.32 



Paper-mill pond, water, 432 02 



Foot of Long fall, Contoocook river, 433.82 



Head of Long fall, 10,000 feet distant, .... 546.91 



Hillsborougli Bridge station, 27 " 574.03 



Heights in Boscawen and Salisbury. Furnished from surveys for 

 Blackwater River Railroad, by R. S. Howe, engineer. 



Heights in feet. 



Dingett's Corners, 479.90 



Blackwater river at crossing, -| mik above this place, .... 442.96 



Clark's island, 508.80 



Blackwater river, -f mile above Clark's island 526.67 



Webster village, 555.00 



Salisbury, south line of township, 568.72 



South Salisbury, road, 563.2 



Salisbury Centre, road, 592.50 



North Salisbury, island in river, 602.20 



The " Bay" at this place, 598.90 



Fourth N. H. Turnpike, near J. G. White's, Andover, .... 632.00 



South-west corner of the town of Salisbury 899.23 



Heights on Kearsarge Mountain. Furnished from carriage-road sur- 

 vey, Warner, by R. S. Howe. 



U. S. Signal post, Kearsarge mountain, 



Kearsarge mt., " Garden," 



Plumbago point, southerly end of Mission ridge. 

 Lowest point between Kearsarge and Black mountain, 

 Lowest point between Mission ridge and Black mountain. 



Heights in 

 feet. 



2942.79 

 2622.50 

 1705.00 

 2426.67 

 2252.55 



7. Railroad Surveys in Northern New Hampshire. 



Heights along Boston, Concord & Montreal Railroad, and Mt. Wash- 

 ington Branch. 



The records of this road having been lost by fire, the altitudes published in Guyot's 

 Memoir on the "Appalachian Mountain System," which were derived from the original 

 VOL. L 37 



