Alethopteris, 136, 165, 196.

Algae (see Sea-weeds).

Alligators, 218, 297.

Alnus, 262.

Amblypterus, 188; macropterus, 188.
Ambonychia, 111.

Ammonites, 187, 212-214, 237-239, 272;
Humphresianus, 238; bifrons, 238.
Ammonitida, 239, 272, 285, 294.
Amphibia, 189; of the Carboniferous,
189-191; of the Permian, 200; of the
Trias, 215-217; of the Jurassic, 242; of
the Miocene, 313.
Amphicyon, 322.
Amphilestes, 253.
Amphispongia, 118.
Amphistegina, 311.

Amphitherium, 253 255; Prevostii, 254.
Amphitragulus, 317.

Amplexus, 173; coralloides, 174.

Ampyx, 108.

Ananchytes, 266.

Anchitherium, 301, 302.

Ancyloceras, 272, 273; Matheronianus,

273.

Ancylotherium Pentelici, 315.
Andrias Scheuchzeri, 313, 314.
Angiosperms, 261, 262.

Animal Kingdom, divisions of, 375-378.
Anisopus, 206.

Annelida, of the Cambrian period, 82,
83; of the Lower Silurian, 107; of the
Upper Silurian, 122, 123; of the De-
vonian, 143, 144; of the Carboniferous,
178.

Annularia, 137, 196, 207.

Anomodontia, 220.

Anoplotherida, 302.

Anoplotherium, 302, 303; commune, 303.

Ant-eaters, 299, 315, 349, 350, 353.

Antelopes, 317.

Anthracosaurus Russelli, 190.

Anthrapalamon gracilis, 180.
Antilocapra, 318.

Antilope quadricornis, 318.
Antwerp Crag, 325.

Apes, 323.

Apiocrinus, 231.

Apteryx, 346, 348.

Aqueous rocks, 15.

Arachnida of the Coal-measures, 181.

Aralo-Caspian Beds, 326.

Araucaria, 262.

Araucarioxylon, 170.

Arca, 198; antiqua, 199.

Archæocidaris, 178.

Archæocyathus, 82.

Archaeopteryx, 252, 281; macrura, 252,

Bony Fishes (see Teleostean Fishes).
Bos primigenius, 356; taurus, 356.
Boulder-clay, 337.

Bourgueticrinus, 266.
Bovey-Tracy Beds, 305, 309.
Brachiopoda, 125; of the Cambrian rocks,

87; of the Lower Silurian, 108-110; of
the Upper Silurian, 125-128; of the De-
vonian, 147, 148; of the Carboniferous,
184-186; of the Permian, 198; of the
Trias, 211; of the Jurassic, 234; of the
Cretaceous, 268; of the Eocene, 292.
Brachymetopus, 179.

Brachyurous Crustaceans, 180, 197.
Bradford Clay, 227.

Breaks in the Geological and Palæonto-
logical record, 44-52.

Breccia, 19.

Brick-earths, 339.

Ceratiocaris, 108.

Ceratites, 212-214; nodosus, 212.
Ceratodus, 214; altus, 214; Fosteri, 214,
215, 255; serratus, 214.
Ceriopora, 145; Hamiltonensis, 146.
Cerithium, 213, 293; hexagonum, 294.
Cervidae, of the Miocene period, 317; of
the Pliocene, 329; of the Post-Pliocene,
354, 355.

Cervus, 317; capreolus, 336, 354; elaphus,
336, 354; megaceros, 354, 355; taran-
dus, 354.

Cestracion Philippi, 188, 255.
Cestracionts, of the Devonian, 154; of the
Carboniferous, 188; of the Permian,
199; of the Trias, 214; of the Jurassic,
242; of the Cretaceous, 275.

Cetacea, 299; of the Eocene, 299; of the
Miocene, 315.

Chama, 236.

Chamaerops, 308; Helvetica, 309.
Chazy Limestone, 95, 96.

Cheiroptera, of the Eocene, 304, 305; of
the Miocene, 322.
Cheirotherium, 215, 216.

Cheirurus, 108, 123; bimucronatus, 124.
Chelichnus Duncani, 202.

Chelone Benstedi, 280; planiceps, 251.
Chelonia, of the Permian, 202; of the
Jurassic, 251; of the Cretaceous, 280;
of the Eocene, 296; of the Miocene, 213.
Chemnitzia, 213.

Chemung Group, 135, 136, 137.
Chert, 34.

Chillesford Beds, 325, 326, 336.

Chonetes, 127, 147, 184; Hardrensis, 185.
Chonophyllum, 173.

Cidaris, 266.

Conclusions to be drawn from Fossils,
52-56.

Concretions, calcareous, 29; phosphatic,
31; of clay-ironstone, 31; of manganese,

31.

Conglomerate, 18.

Conifera, 262; wood of, 13; of Devonian
period, 138; of the Carboniferous, 170;
of the Permian, 196; of the Trias, 208;
of the Jurassic period, 230.
Coniston Flags and Grits, 116.
Connecticut Sandstones, footprints of,
222, 346.

Conocoryphe Mathewi, 85; Sultzeri, 85.
Conodonts, 114, 131.
Constellaria, 105.

Constricting serpents of the Eocene, 296.
Contemporaneity of strata, 44-46.
Continuity, theory of, 5-7.'

Conularia, 111, 129, 148, 186, 199, 237;

ornata, 149.

Conulus, 186.

Conus, 293.

Coomhola Grits, 158, 159.

Coprolites, 31, 243.

Coralline Crag, 324.
Corallines, 25.
Corallium, 311.

Coral-rag, 227, 229, 230.
Coral-reefs, 24-26.
Coral-rock, 26.
Coral-sand, 19, 26.

Corals, 103; of the Lower Silurian, 104,
105; of the Upper Silurian, 119; of the
Devonian, 140-143; of the Carbonifer-
ous, 172-175; of the Permian, 197; of
the Trias, 209; of the Jurassic, 230, 231;
of the Cretaceous, 266; of the Eocene,
292; of the Miocene, 311.

Corbula, 235.

Cornbrash, 227, 229.

Corniferous Limestone, 135, 137.
Cornulites, 123.

Cornus, 262.

Coryphodon, 300.

Cowries, 259, 271, 293.

Crabs, 180, 197, 233, 267.

Crag, Red, 324; White, 324; Norwich,
324; Antwerp, 325; Bridlington, 325;
Coralline, 324.

Crania, 110, 127, 198, 269; Ignabergensis,

269.

Crassatella, 292.

Crepidophyllum, 142; Archiaci, 142.
Cretaceous period, 256-283; rocks of, in
Britain, 257-259; in North America,
260, 261; life of, 261-283.
Crinoidal Limestone, 24, 25.
Crinoidea, 120; of the Cambrian, 82; of
the Lower Silurian, 105; of the Upper
Silurian, 120-122; of the Devonian, 143;
of the Carboniferous, 175; of the Per-
mian, 197; of the Trias, 209; of the
Jurassic, 231; of the Cretaceous, 266;
of the Eocene, 292.

Crioceras, 273; cristatum, 274.
Crocodilia, 218; of the Trias, 218; of the
Jurassic, 251; of the Cretaceous, 280;
of the Eocene, 296, 297.
Cromer Forest-bed, 336.
Crossozamites, 230.
Crotalocrinus, 122.

Decapod Crustaceans, 180.
Deer, 317, 329, 354.

Deinosauria, 248; of the Trias, 221; of
the Jurassic, 248-251; of the Cretaceous,
277-279.

Deinotherium, 319, 320; giganteum, 320.
Denbighshire Flags and Grits, 115.
Dendrocrinus, 82.
Dendrograptus, 100.
Desmids, 138, 261.

Devonian Formation, 133-136; origin of
name, 133; relation to Old Red Sand-
stone, 133, 134; of Devonshire, 134;
of North America, 135, 136; life of,
136-156.
Diadema, 266.

Diatoms, 33; of the Devonian, 138; of
the Carboniferous, 164; of flints, 261;
of Richmond Earth, 33, 307.
Dibranchiate Cephalopods, 112; of the
Trias, 212; of the Jurassic, 239-241;
of the Cretaceous, 274, 275; of the
Eocene, 294; of the Miocene, 312.
Diceras, 236; arietina, 236.
Diceras Limestone, 227, 236.
Dichobune, 303.

Dichograptus, 101; octobrachiatus, 101.
Dicotyledonous plants, 262.

Dicotyles antiquus, 317.

Dicranograptus, 101, 119.

Dolphins, 299, 315.

Dorcatherium, 317.

Downton Sandstone, 116.

Draco volans, 245.

Dragon-flies, 311.

Drift, Glacial, 337.

Dremotherium, 317.

Dromatherium sylvestre, 223, 224.
Dryandra, 262.
Dryopithecus, 323.
Dugongs, 299.

Echinodermata, of the Cambrian, 82; of
the Lower Silurian, 105; of the Upper
Silurian, 120; of the Devonian, 143; of
the Carboniferous, 175; of the Permian,
197; of the Trias, 209; of the Jurassic,
231; of the Cretaceous, 266; of the
Eocene, 292.

Echinoidea, 177; of the Upper Silurian,
120; of the Devonian, 143; of the Car-
boniferous, 177; of the Permian, 197;
of the Jurassic, 233; of the Cretaceous,

266.

Edentata, 349; of the Eocene, 299; of the
Miocene, 315; of the Post-Pliocene,
349-353.

Edriocrinus, 122.

Eifel Limestone, 135.

Elasmobranchii (see Placoid Fishes).
Elasmosaurus, 276.
Elephants, 319, 320, 330.

Elephas, 320; Americanus, 357; anti-
quus, 329, 330, 336, 341, 357; Falconeri,
359; Melitensis, 359; meridionalis, 329,
330, 336, 357; planifrons, 321; primi-
genius, 339, 341, 357, 358.
Elk, 354; Irish, 354, 355.
Ellipsocephalus Hoffi, 84.
Elotherium, 317.
Emydidæ, 296.

Emys, 280.

Enaliosaurians, 219, 242, 276.

Encrinital marble, 24.

Fishes, 150; of the Upper Silurian, 130,

131; of the Devonian, 150-155; of the
Carboniferous, 187, 188; of the Permian,
199, 200; of the Trias, 214, 215; of the
Jurassic, 240-242; of the Cretaceous, 275,
276; of the Eocene, 295, 296; of the
Miocene, 312, 313.

Flint, 33; structure of, 34; origin of, 34;
organisms of, 34, 138, 263; of Chalk, 34,
259, 261.

Human implements associated with bones
of extinct Mammals, 363, 364.
Flora (see Plants).

Footprints of Cheirotherium, 215, 216;
of the Triassic sandstones of Connecti-
cut, 222.
Foraminifera, 22-24, 71-74; of the Cam-
brian, 82; of the Lower Silurian, 98;
of the Carboniferous, 171, 172; of the
Permian, 197; of the Trias, 209; of the
Jurassic, 230; of the Cretaceous, 21,
22, 263; of the Eocene, 290; of the
Miocene, 311; of the Post-Pliocene,
338; of Atlantic ooze, 22, 23; as build-
ers of limestone, 24, 25, 28; as forming
green sands, 34.
Forbesiocrinus, 175.

Forest-bed of Cromer, 336.
Forest-bugs, 311.

Forest-marble, 227.

Gaspé Beds, 134.

Gasteropoda, of the Cambrian, 88; of the
Lower Silurian, 111; of the Upper Silu-
rian, 128, 129; of the Devonian, 148; of
the Carboniferous, 186; of the Permian,
199; of the Trias, 213; of the Jurassic,
236, 237; of the Cretaceous, 271; of the
Eocene, 292, 293.

Gastornis Parisiensis, 297.
Gault, 257, 258.
Gavial, 251, 297.

Genesee Slates, 135.

Geological record, breaks in the, 47-52.
Giraffes, 317.

Glacial period, 335; deposits of, 337, 338.
Glandulina, 311.

Glauconite, 34, 74, 98, 263.

Glauconome, 126, 184; pulcherrima, 183.
Globe Crinoids (see Cystoidea).
Globigerina, 22, 23, 264.

Glutton, 360.

Glyptaster, 120.

Glyptocrinus, 122.

Glyptodon, 351, 352; clavipes. 352.
Glyptolomus, 153.

Goats, 318.

Goniatites, 130, 149, 187, 214; Jossæ, 187.