INDEX TO VOLUME I. 



Sporangium of diatomaceje, forma- 

 tion of . . ■ . . . .451 

 Synedra tabulata, Fig. 19. 



" structure of . . . 438 

 Scliizonema obtusum, Fig. 18. 



Stamp Act Island deposit, . . 503 



Staurastrum polymorphvun, . . 505 



Soundings, how to collect . . 483 



Soluble ^lass, use of diatomaceae for 462 



Stauroneis, front view of . . . 437 



" acuta, F. V., Fig. 34. 



" S. v., Fig. 33. 



" structure of . . . 435 



Septum of diatomaceas, . . . 437 



Stipes of diatomaceas, . . . 438 



Sub-plutonic deposits, to clean . 495 



Shell cleanings, how to collect . 482 



Terminal nodule of diatomaceas, . 434 



Triceratium, structure of . . . 432 



Wilkesii, . . .488 



" Montereyii, Fig. i. 



' ' punctatum, F. V. , Fig. 2 . 



S.V.,Fig.7. 



" form of . . . 425 



" favus, Fig. 12, . . 489 



Test objects for microscopes, . . 427 



Terpsinoe musica 488 



Tripoli 424, 462 



Typical cell of Schwann, . . 445 

 Tabellaria 457 



Umbagog Lake deposit, 

 Valves of diatomaceae, 



503 

 42s 



Zostera marina, diatomaces upon . 488 



Dip, magnetic, lines of equal . 150, 153 

 " " daily and annual va- 



riations of . 

 Districts, middle and northern, 381 ; 

 maritime, 381, 564; AUeghanian, 

 333, 383, 560, 574 ; Canadian, 332, 

 382, 560, S74; Alpine, 336, 392, 

 Dixville Notch, 



" " origin of . 

 Dodge, J. W. . 

 " mine, . 

 Drift hills, 



Drouth 123, 324, 330 



Dwight, President . 72, 75, 178, 303, 345 



IS7 



S7I 

 641 



633. 643 



16 



. 314 



Eagle's Nest, 635 



Edwards, A. M 48 



" on diatomaceas, . 416 



Egleston, T 48 



Elevations. See altitudes. 

 Elevation, theory of . . .518 

 Elm, 386 ; large ones, . . .580 

 VOL. L 85 



6S7 



Engine, mountain .... 83 

 Eozoic, 507; divided, 508; life in, 



508 ; signification of name, . . 511 

 Eozoon, ...... rio 



Erosion, agents of, 591 ; amount of, 



S92 ; in rainless and rainy coun- 



^ tries 5g2 



Errol, scenery of . . . . 643 

 Expedition, Mt. Washington, history 



of, 96 ; narrative of, 102 ; home of, 103 

 Explorations in White Mountains, 



29, 32, 36 

 Exeter sienite, . . 27, 55, 57, 530 



Fabyan house, .... 79 



" path, . . . . 73, 80 



" turnpike, .... 80 



Fairbanks, H. .... 52 



Favosites, 48 



Featherstonhaugh, G. W. . . 524 



Felsites, 56 



Fertilizers, 547 



" use of . . . . 554 



" composition of . . 555 



Field, Darby 59 



Fires in forests, . . 75, 125, 581 



First visit to Mt. Washington, . 59 



First dry land, . . . • Jii 

 Flint, William F., on distribution of 



plants, 381 



Flora of New Hampshire, . . 382 



" alpine .... 392, 568 



Flume at Dixville, .... 642 



" house 80 



Flumes 593 



Forest, extent of ... . 575 

 " removal and restoration of 



577, 581 

 " influence of, on rain-fall, 123, 321 

 Fossils discovered 48 



Franconia breccia, 

 Frost action, . 

 " work, 

 " feathers, 



SIS. S23: 



526 



S97 

 130 



131 



Geodetic connection survey, . . 241 

 Geographic position affects amount 

 of rain-fall, 314 ; its relation to sce- 

 nery, S90; positions determined 

 by C. S., 338; by geological sur- 

 vey, 339 ; by geodetic connection 



survey, 241 



Geological map, by Dr. Jackson, . 9 

 " of first year, . . 17 



" of second year, . 36 



" of the White Moun- 



tains . 33> 67 

 " of southern N. H., 50 



" of gold field, 22, 46 



