SCIENTIFIC INDEX. lxi 
persimilis, 241, 215, 276. 
pulchella, 2838, 215, 227, 276, 284, 285. 
var. persimilis, 284, 227. 
ramosa, 276, 215, 285. 
sigillaroidea, 276. 
subnodosa, 276. 
subplana, 276, 215. 
undulata, 297, 215, 276. 
Calloporella, 107, 290. 
Calloporid&, 275, 107, 109, 289, 290. 
Callotrypa, 107. 
Camarella bernensis, 382. 
bisuleata, £70. 
hemiplicata, 882. 
owatonnensis, £70, 471. 
Carboniferous, Bryozoa, 111; flora, 6, 2. 
Catskill group, ferns, 6. 
Cell, 98. 
interstitial, 98. 
Cellariide, 187. 
Cenomanian, 6, 1, 3-7; Bryozoa, 111. 
Ceramophylla, 331, 107, 330, 332. 
frondosa, 331, 
Ceramopora, 107. 
Ceramoporella, 328, 102, 107, 238, 320, 322, 330. 
distincta, 328, 330. 
inclusa, 329, 328, 331. 
interporosa, 330, 328, 329. 
ohioensis, 329. 
Ceramoporid@, 319, 104, 107, 109. 148, 322, 324, 326, 
330. 
Cerionites, 67. 
dactyloides, 67, 60. 
Chetetes, 307. 
colliculatus, 304. 
cumulata, 307, 301, 304. 
delicatulus, 263, 
gracilis, 231. 
granuliferus, 323. 
lycoperdites, 246, 
lycoperdon, 246. 
ortoni, 306. 
Chainodictyon, 106, 111, 207, 209. 
Chalk, 49; microscopic preparation, 26. 
Chazy, Bryozoa, 108, 214. 
Chiloporella, 107, 327. 
Chilostomata, 105, 109, 111. 
Chilotrypa, 107, 110. 
Cincinnati group, Trepostomata, 109. 
Cinnamomum, 8, 5. 
scheuchzeri, 16, 9, 22. 
Cissus, 8, 5. 
atlantica, 17. 
browniana, 17, 9, 22. 
nimrodi, 17. 
Classification, Bryozoa, 105, 104. 
Clathropora, 106, 109, 163, 180, 185. 
flabellata, 180, 185. 
Clay, microscopic preparation, 25. 
Climacograptus typicalis, $2*. 
Clitambonites, 377, 334, 378, 380, 400, 
americanus, 378. 
diversa, 378, 334, 337*, 380, 399, 421, 428, 461. 
var. altissima, 381. 
Clitambonitids, 381. 
Clonopora, 107, 110, 121-123. 
Coccoliths, 49, 23, 52. 
Coccospheres, 49. 
Ceelenterata, 81. 
Ceeloconus, 106, 110. 
Coencecium, 98, 
Coin-stones, 27. 
Columnaria, 85, 83, 90. 
alveolata, 85, 86. 
halli, 85, 86. 
incerta, 83. 
Communication pores, 98. 
Conchiolites, 95. 
flexuosus, 84. 
minor, 95. 
Conchites rhomboidalis, 410. 
Constellaria, 311, 107, 186, 289, 290, 309, 313. 
fischeri, 311. ; 
florida, 311. 
limitaris, 312, 311. 
parva, 311. 
polystomella, 811. 
varia, 511. 
Constellarida, 290. 
Corallistes microtuberculatus, 71*. 
Corallites, spiniform, 98. 
Corals, chapter, 55-95. 
Cordiatex, 6, 2. 
Cordaites, 2. 
Correlation of floras, 6. 
Coscinella, 106, 110, 185. 
Coscinium, 106, 110, 180, 185. 
proavium, 180, 185. 
Coscinopora infundibuliformis, 60. 
sulcata, 57. 
Covers, zocecial, 98, 104. 
Crania, 372, 373-376. 
craniolaris, 372. 
granulosa, 373. 
halli, 375. 
multipunctata, 373. 
scabiosa, 373, 374. 
setigera, 372, 373-375. 
trentonensis, 374, 373. 
Craniella, 374, 375. 
hamiltonia, 374. 
meduanensis, 374. 
ulrichi, 375, 374. 
Craniidx, 372, 
Crategus, 8. 
atavina, 20, 9, 22. 
Credneria, 7, 8. 
Crepipora, 322, 107, 248, 324, 327. 
epidermata, 325, 322. 
hemispherica, 324, 323. 
impolita, 327. 
perampla, 323, 304. 
simulans, 322. 
spatiosa, 323. 
subequata, 322. 
Cretaceous, appearance of dicotyledons in middle, 
6; Bryozoa, 111; chapter on fossil plants from 
Minn., 1-22; chapter on microscopic fanna of 
