INDEX TO VOLUME I. 



655 



Page. 



Crinoids, 49 



Crown monument, . . 172, 218, 637 



Crystal cascade 631 



Crustacea, marine, in fresh water, . 568 



Cuba falls, 631 



Culver hall 57 



Cutler, M 64, 70 



Current from south-west, . .119 



Cyclones, course of . . . .121 



Dana, E. S 38-40 



" J. D., 38; letter from, 40; 

 calls Eozoic rocks Ar- 

 chaean, . . ■ 511 

 Dartmouth college, .... 20 

 " students as explorers, . 30 



32. 36 



" Scientific Association, . 48 



Davis bridle-path, . . . 61,80 



Dawson, J. W 51° 



Declination of needle, . . 153, 164 



DlATOMACE^, INDEX TO : 



Achnanthes brevipes. Fig. 14, . 488 



" longipes, . . . 488 



Achnanthes, structure of . ■ 438 



Achnanthidium 453 



Actinoptychus, structure of . . 43° 



.lEcidium asterum, .... 505 



" Dracontii, . . • 5°5 



" grossulariae, . . . S°S 



" Violae, . . . ■ 5°S 



Amphitetras, form of . . • 425 



" structure of . . 432 



Arachnoidiscus, . • • • 488 



Aulacodiscus Oregonensis, Fig. 28, 488 



" structure of . • 428 



Bacillaria paradoxa, . • -441 

 " " in fresh water, . 442 

 " " mode of move- 

 ment of • 442 

 Bemis lake deposit, . • • S°2 



Berg-mehl 461 



Biddulphia aurita 4°° 



" Baileyii, • • • 488 



" regina, .... 488 

 " rhombus, F. v., Fig. 22. 

 S.V., Fig. 21. 



Page. 



445 

 453 

 453 

 454 



425 



430 

 489 



453 

 503 

 505 

 503' 

 .453 

 425 

 425 



Cell, typical, of Schwann, 

 Cocconeis, .... 

 Cocconema, .... 



" cistula, conjugation of 



Connecting membrane of diatoma^ 



cea: 



Coscinodiscus radiatus. Fig. 10. 



" structure of 



" subtilis, 



Colletonema, . 

 Concord deposit, 

 Cosmarium Botrytis, 

 Chalk pond, Newbury deposit, 



Cyclotella 433 



Cingulum of diatomaceEE, 

 Coscinodiscus, form of . 



Dutch rushes, diatomaceje upon . 488 

 Dust containing diatomaceae, how to 



collect, 484 



Diatoma vulgare. Fig. 20. 

 Diatom, typical form of a . 424, 425 

 Diatoma, . . . . 421, 449 



" to cut through . . .421 



" hyalinura 488 



Diatomaceee, 

 Natural history of, 416-419 ; mixed 

 gatherings of, to separate into den- 

 sities, 496 ; preserving and mount- 

 ing, 496 ; little known to biologists, 

 420; origin of name, 421 ; where 

 found, 422 ; under ice, 423 ; struc- 

 ture of, 423 ; cell-contents of, 424 ; 

 oil globules of, 425 ; feeding, 425 ; 

 valves of, 425 ; delicacy of mark- 

 ings of, 426 ; movements of, 438 ; 

 mode of movement of, not known, 

 441 ; movements of, accelerated by 

 heat, 441 ; internal anatomy of, 

 445 ; how to collect, 482 ; mode of 

 growth of, 444 ; variation of, 448 ; 

 rapid multiplication of, 448 ; re- 

 production of, 449 ; stipes or pedi- 

 cle of, 449 ; modes of occurrence 

 of, 456; uses to man of, 456; in 

 moist earth, 456; in mosses on 

 house-tops, 456; in dust, 456; in 

 mud, 458 ; in stomachs of moUus- 

 ca, 458 ; in stomachs of sea ur- 

 chins and sea cucumbers, 459 ; in 

 guano, 459 ; semi-fossil, 460 ; fos- 

 sil, ifresh-water, 460 ; used as food 

 by man, 461 ; fertilizing power of, 

 462 ; on algae, 458 ; lacustrine sed- 

 imentary deposits of, 460 ; living, 

 color of, 457 ; used as food, 461 ; 

 deposits of, use as fertilizers, 462 ; 

 and geology, 463; in i™d, 472; 

 directions for collecting, preserv- 

 ing, and transporting, 478 ; fossil 

 deposits of, how to collect, 478; 

 recent gatherings of, how to col- 



