Ceratites; nodosus.
Ceratodus; altus; Fosteri; serratus.
Ceriopora; Hamiltonensis.
Cerithium; hexagonum_.
Cervidoe, of the Miocene period; of the Pliocene; of the
  Post-Pliocene.
Cervus; capreolus; elaphus; megaceros; tarandus.
Cestracion Philippi. 
Cestracionts, of the Devonian; of the Carboniferous; of the Permian;
  of the Trias; of the Jurassic; of the Cretaceous.
Cetacea; of the Eocene; of the Miocene.
Cetiosaurus.
Choeropotamus.
Choetetes; tumidus. 
Chain-coral. 
Chalk; structure of; Foraminifera of; origin of; with flints;
  without flints.
Chama.
Chamoerops; Helvetica. 
Chazy Limestone.
Cheiroptera, of the Eocene; of the Miocene.
Cheirotherium.
Cheirurus; bimucronatus.
Chelichnus Duncani.
Chelone Benstedi; planiceps.
Chelonia, of the Permian; of the Jurassic; of the Cretaceous;
  of the Eocene; of the Miocene.
Chemnitzia. 
Chemung Group. 
Chert. 
Chillesford Beds.
Chonetes; Hardrensis.
Chonophyllum.
Cidaris. 
Cincinnati Group.
Cinnamomum polymorphum. 
Cinnamon-trees.
Cladodus. 
Claiborne Beds.
Clathropora; intertexta. 
Clay; Red, origin of. 
Clay-ironstone, nodules of.
Cleidophorus.
Cleodora.
Climacograptus. 
Clinton Formation.
Clisiophyllum.
Clupeidoe.
Clymenia; Sedgwickii. 
Coal; structure of; mode of formation of. 
Coal-measures; mineral characters of; mode of formation of;
  plants of. 
Coccoliths.
Coccosteus.
Cochliodus; cantortus.
Coleoptera.
Colossochelys Atlas.
Columnaria; alveolata.
Comatula. 
Conclusions to be drawn from Fossils. 
Concretions, calcareous; phosphatic; of clay-ironstone;
  of manganese. 
Conglomerate.
Coniferoe; wood of; of Devonian period; of the Carboniferous;
  of the Permian; of the Trias; of the Jurassic period. 
Coniston Flags and Grits. 
Connecticut Sandstones, footprints of.
Conocoryphe Mathewi; Sultzeri. 
Conodonts.
Constellaria. 
Constricting serpents of the Eocene. 
Contemporaneity of strata. 
Continuity, theory of.
Conularia; ornata.
Conulus.
Conus. 
Coomhola Grits. 
Coprolites. 
Coralline Crag. 
Corallines.
Corallium. 
Coral-rag. 
Coral-reefs. 
Coral-rock. 
Coral-sand. 
Corals; of the Lower Silurian; of the Upper Silurian; of the
  Devonian; of the Carboniferous; of the Permian; of the Trias;
  of the Jurassic; of the Cretaceous; of the Eocene; of the
  Miocene.
Corbula. 
Cornbrash. 
Corniferous Limestone.
Cornulites.