402 
148; of the Carboniferous, 186; of the 
Permian, 193; of the Trias, 211; of the 
Jurassic, 234- 236; of the Cretaceous, 
268-270; of the Eocene, 292. 
Lamna, 275, 312. 
Lamp-shells (see Brachiopoda). 
Land-tortoises, 313. 
Lauracee, 308. 
Laurentian period, 65; rocks of, 65, 66; 
Lower Laurentian, 66; Upper Lau- 
rentian, 66; areas occupied by Lau- 
rentian rocks, 66; limestones of, 66, 
67; iron-ores of, 68; phosphate of lime 
of, 68; graphite of, 68 ; life of, 67-75. 
Leaf-beds of the Isle of Mull, 306. 
Leda, 292; truncata, 338. 
Leguminosites Marcouanus, 263. 
Lemming, 344. 345. 
Lepadide, 267. 
Lepadocrinus Gebhardi, 106. 
Leperditia, 108; canadensis, 107. 
Lepidaster, 120. 
Lepidechinus, 178. 
Lepidesthes, 178. 
Lepidodendroids, 166, 167, 297. 
Lepidodendron, 118, 136, 166, 196; Stern- 
bergi, 167. 
Lepidoptera, 311. 
Lepidosiren, 153. 
Lepidosteus, 188. 
Lepidostrobus, 166. 
Lepidotus, 275. 
Leptena, 109, 110, 125, 234; Ltassica, 
235; sericea, 110. 
Leptoceelia, 127 ; plano-convexa, 127. 
Lias, 226, 227, 229. 
Lichas, 108. 
Licroph ycus Ottawaensis, 97. 
Lignitic Formation of North America, 
288, 294. 
Lily-encrinite, 209, 210. 
Lima, 235. 
Lime, phosphate of, 30, 31. 
Limestone, 23-27; varieties of, 27-30; 
origin of, 21; microscopical structure 
of, 26; Crinoidal, 24; Foraininiferal, 
24, 26; coralline, 24; muagnesian, 27; 
metamorphic, 27; oolitic, 28-30; piso- 
me 29; bituminous, 36; Laurentian, 
67. 
Limneea, 294; pyramidalis, 294. 
Limulus, 84, 124, 125, 179. 
Lingula, 87, 88, 110, 127, 147, 198; 
neri, 198. 
Lingula Flags, 77, 78, 79, 88. 
Lingulella, 87, 88; Davisii, 88; ferru- 
ginea, 88. 
Liriodendron, 262, 308; Meeki, 263. 
Lithostrotion, 173; trregulare, 174. 
Lituites, 130. 
Lizards (see Lacertilia). 
Llama, 354. 
Llanberis Slates, 79. 
Llandeilo rocks, 92, 94, 96 
Cred- 
Llandovery rocks, 93 ; Lower, 93; Upper, 
115, 
Lobsters, 180, 210, 233, 267. 
Loess, 339. 
London Clay, 287, 288. 
Longmynd rocks, 77-80, 83. 
Lonsdaleia, 173. 
Lophiodon, 316. 
Lophophyllum, 173. 
INDEX. 
Lower Cambrian, 77-79; Chalk, 259; Cre- 
taceous, 257, 258; Devonian, 134 ; 
Eocene, 287, 288; Greensand, 257, 258; 
Helderberg, 117, 118; Laurentian rocks, 
66; Ludlow rock, 116; Miocene, 305; 
Old Red Sandstone, 134; Oolites, 227, 
229: Silurian period, 90-114; rocks of, 
in Britain, 92-94; in North America, 
94-96 ; life of, 97-114. 
Loxonema, 186, 199, 213. 
Ludlow rocks, 116, 117. 
Lycopodiacee, 118, 136, 167. 
Lynton Group, 134. 
Lyrodesma, 111. 
Macaques, 323, 331. 
Macheracanthus major, 151, 155. 
Machairodus, 221, 249, 322, 331, 
cultridens, 331. 
Maclurea, 111; erenulata, 112. 
Macrocheilus, 186, 199, 213. 
Macropetalichthys, 152; Sullwvanti, 151. 
Macrotherium giganteum, 315. 
Macrurous Crustaceans, 180. 
Mactra, 292. 
Maestricht Chalk, 259, 279, 286. 
Magnesian Limestone, 27; nature and 
structure of, 28; of the Permian series, 
194, 196. 
Magnolia, 262, 290, 319. 
360; 
; Mammalia, of the Trias, 223, 224; of the 
Jurassic, 253, 25+; of the Eocene, 
299-305; of the Miocene, 313-323; of 
the Pliocene, 327-331; of the Post- 
Pliocene, 348-362. 
Mammoth, 339, 341, 344, 357-359. 
Man, remains of, in Post-Pliocene de- 
posits, 341, 344. 
Manatee, 299. 
Mantellia, 230; megalophylla, 230. 
Maple, 290, 308, 310 
Marble, 28; encrinital, 24; statuary, 27. 
Marcellus Shales, 135. 
Mariacrinus, 122, 
Marmots, 322. 
Marsupials, 299; of the Trias, 223; of the 
Jurassic. 253, 254; of the Eocene, 299; 
of the Miocene, 315; of the Post-Plio- 
cene, 348, 319. 
Marsupiocrinus, 122. 
Marsupites, 266. 
Mastodon, 319, 321, 322; Americanus. 
angustidens, 322; Arvenensis, 329; 
longrrostris, 322 ; Ohioticus, Bote Siva- 
lensis, 321. 
Medina Sandstone, 116. 
Megalichthys, 188. 
Megalodon, 148. 
Megalomus, 128. 
Megalony2, 351. 
Megalosaurus, 249, 278. 
Megatherrum, 350, 351; Cuvieri, 350. 
Melania, 294. 
Melonites, 178. 
Menevian Group, 77-79. 
Menobranchus, 189. 
Meristelia, 197; cylindrica, 127; tnater- 
media, 127 ; ; naviformis, 127 
Mesopithecus, 323. 
Mesozoic Period, 44. 
Michelinia, 142. 
Micraster, 266. 
Microlestes, 224; antiquus, 223. 
