INDEX. 
643 
Cherokee country coal, 3. 
Chert, 347. 
Chlorite, 425, 426 - 431. ) 
Chlorite, slate, 424, 426. Taconio 
rocks generally, 422 - 438. 
Chloritic rocks, 425. 
Choctaw country coal, 3. 
Chondrodite, 465. 
Chromate of iron, 463, 481, 560, 577. 
Cinnamon stone, 577. 
Circulation in infusoria, 63. 
Claverack land-slide, 3.“ 
Clarksville tufa, 81. 
Clorophmite in trap, 281 - 282. 
Clay quaternary, 126. 
Clay balls, 82. 
Clay beds, quaternary, 126 - 128, 140, 
141. 
— beds of the Long-island division, 
range of, 257. 
— blue, 128, 152. 
— yellow or bluff, 126, 128, 151. 
— economical applications, 141. 
— red, of Long-island division, 249. 
— and sands of Long-island division, 
248-273. 
— white, of Long-island division, 
252, 253, 254, 255, 256, 258. 
— potters, 250, 253. 
— pyritous, of Long-island, 266. 
Cleavage, oblique of slate, 370, 388- 
389, 390. 
Cliff limestone, 367. 
Cliffs, undermined, 20. 
Climate, change of, 227, 296. 
Clinkstone, 279. 
Cliutonite, 467, 577. 
Closteria, 51. 
Closterium, 58, 60-63, 65. 
Cloves, 279, 280, 365. 
Coal mines, reputed, 84,114, 373, 391 
-393, 421, 447, 449, 529. 
Coal grit, 310. 
Coal, if found in N. Y., where, 313. 
Coal, quantity of, in the U. S., 296 - 
297. 
Coal system, 2, 295. 
— formation, patches- of base of, 2. 
— covers a great area of the New- 
York system, 2. 
— extent of, in U. S., 297. 
— of Green river and Wabash val¬ 
leys, 3. 
— origin of, 295. 
Coceolite, 467, 477, 531, 532, 577. 
Cocconeis, 50, 52, 74. 
Cocconema, 49, 52, 240. 
Coceolite, green, 532, 539, 566. 
— grey, 532. 
— red, 532. 
— white, 481, 531, 532. 
— yellowish, 532, 
Cocktail grit, 325 
Coeymans, fossil bones of, 44. 
Coldspring beaches, 26 ; spits, 28. 
Collect pond in New-York, now filled 
up and built over, 138. 
Colophonite, 575. 
Columnar gneiss, 593. 
— trap, 278, 281 - 282. 
Columnar trappean rocks, 278, 281, 
282. 
Comparative anatomy, use of in geo¬ 
logy, 45. 
Conclusions on the drift, 228. 
Concreted carbonate of lime, 80-82. 
Concretions of the quaternary division, 
82, 125. 
— of the Helderberg division (Vide 
hornstone, Champlain division), 
409. 
Coney island, alluvial changes, 17, 18, 
20 . 
Conglomerate limestone of red sand¬ 
stone division, 288, 448. 
Conglomerates, alluvial, 122, 160, 236. 
— calcareous, 406, 417-419. 
Congress spring, Saratoga, 97. 
Conrad, Prof., 275-277, 339, 345, 
348, 393. 
Constitution island flats (alluvial), 9. 
Constructions, remarks on, 328, 358. 
Contorted strata, 248 - 251, 330 - 336, 
367, 372, 373 - 410, 433, 437, 459, 
548. 
Conularia, 345. 
Coping stone, 417. 
Copper ore, 282, 436, 456. 
— red oxide, 282. 
— sulphuret, 307, 315. 
Copper, carbonate of, 122, 282, 307, 
314, 315, 562. 
— pyritous, 314, 323, 358, 359, 433, 
562. 
Copperas (native), 114-119, 520, 598. 
Corallines, 326, 345. 
Corals, how they secrete lime from sea 
water, 78. 
Cordier, 217. 
Corniferous limestone, 325, 337 - 339. 
Correction of section, 637. 
Corundum, 467. 
Coscinodiscus, 70. 
Cotton rock, 482, 483. 
Corniferous limestone, 2. 
Counties in the First Geological dis¬ 
trict, 1. 
Cowannus marshes, 18. 
Cowneck marshes, 18. 
Coxsackie tufa, 81. 
Crab meadow marshes, 18. 
— beaches, 27. 
Crane-neck beach, 27. 
Creek country, coal of, 3. 
Creeks, as distinguished from rivers, 6. 
Crustacea, 345. 
Crushed strata, 404. 
Cretaceous formation covers parts of 
the New-York system, 3. 
— in New-Jersey and east of the 
Mississippi, 266 - 269, 272 - 
277. 
— of country west of the Mississippi, 
275. 
Crichtonite “ore in octohedral crys¬ 
tals,” 569, 577. 
Crinoidea, 395. 
Cristatella, 55. 
Croton aqueduct, 147, 457. 
Croton delta and flats, 9. 
Crystallized minerals of metamorphic 
limestones, 465, 466-468. 
Crystallographical examination of some 
minerals, 509 - 516. 
Crow inlet, 29. 
Crustacea, 395. 
Cryptogamous plants of the coal epoch, 
296. 
Cupellation for silver, simple method, 
505. 
Curbstones, 447. 
Currents depositing the quaternary, 
148 - 150. 
— polar, 217, 221, 223, 225,227, 274, 
275, 292 - 293, 295 - 296, 298, 
— equatorial, 221, 223,225,227, 274, 
- 275, 292 - 293,295 - 296,298 , 
299. 
— Labradorj 223. 
— ocean, 632. 
— superior and inferior of the ocean, 
222, 225. 
Current, polar, influence of on fossili- 
ferous depositions, 277to 278,299. 
Cyathophyllum, 339. 
Cycles, 11. 
C 3 q)ricardites catskillensis, 300. 
— angustata, 300. 
Cyrtoceras, 337, 338. 
Cytherina, 346, 350. 
