INDEX TO VOLUME I. 



A 1 1 J agC - 



Acknowledgments, ... 27, 58 

 Academy grant, .... 247 

 Acts authorizing geological surveys, 4, 13 



Agassiz, L 34, 46, 58 



Agents of erosion, . . . .591 

 Agricultural geology, . . 8, 546 



Aiken, W 79 , 82 



Albany granite, .... 528 

 " mountains, .... 196 

 " scenery, .... 646 



Alder, 389 



Alleghanian fauna, . . . 332-336 

 382, 560, 574 



Alpine and sub-alpine faunas, . . 336 

 floras, . 392, 571 

 ALTITUDES : 



Reference lines, 250 ; along B., C. 

 & M. R. R., 273; along B., L. & 

 N. R. R., 268 ; along extension, 

 269; along B. & M. R. R., 253, 

 263 ; along Blackwater River R.R., 

 273 ; along Central Vt. R. R., 262 ; 

 along Cheshire R. R., 252, 259; 

 along Concord R. R., 250, 258; 

 along Concord & Portsmouth R. 

 R., 250, 257 ; along Connecticut & 

 Passumpsic R. R., 262; along C. 

 & R. R. R., 269 ; along C. & C. R. 

 R., 272 ; along Contoocook Valley 

 R. R., 273 ; along E. & S. R. R., 

 266; along G. T. R., 275; along 

 M. & N. W. R. R., 271 ; along M. 

 & P. R. R., 271 ; along N. & R. R. 

 R., 267 ; along N. R. R. of N. H., 

 251, 258 ; along P., Gt. F. & C. R. 

 R., 253, 264 ; along P. & O. R. R., 

 254, 265; along Sullivan R. R., 

 261 ; along Suncook Valley R. R., 

 270; along Vt. & Mass. R. R., 

 260 ; along Vt. Valley R. R., 260 ; 



Page. 



along W. & L. R. R., 268 ; surveys 

 in Gilmanton and Belmont, 270 ; 

 along state boundaries, 176, 177; 

 about Concord, 278; along Con- 

 necticut river, 177, 251, 260, 304; 

 along geological section lines, 256, 

 283 ; along Androscoggin river, 

 311 ; along Merrimack river, 308; 

 along Piscataqua river, 313 ; along 

 Saco river, 312; miscellaneous, 

 255, 282 ; of mountains, 279 ; of 

 villages, 275 ; of notches about the 

 White Mountains, 282 ; about Mt. 

 Kearsarge, 273; about Manches- 

 ter, 276 ; about Nashua, 276 ; along 

 main water-shed, .... 209 



Analyses by Dr. Jackson, . . 552 

 Anderson, J. F. . . . 254, 265 



Anemometer, 118 



Androscoggin lakes, . . . 310 

 " river, . . 301, 309 



Arbor-vitae, 384 



Archaean, 511 



Arctic climate in New Hampshire, . 121 



Area of New Hampshire, . .169 



Argillaceous schists, . . .18 



Ascent of Mt. Adams, . . . 613 



" " " in May, . 116 



Ascent of Mt. Washington, . .617 



" " " perilous, 



83, 86, 105, 107 



Atlantic, definition of ... 522 



" period, .... 515 



Atmospheric disintegration, . . 591 



" moisture, . . .122 



Average height of state, . . 296, 652 



Auriferous conglomerate, . . 18 



" slates, .... 536 



Azoic, 511, 532 



Azimuth of polar star, . . .168 



