634 



IXDEX. 



PAGE 



Mississippi, flood-plain 24 



River, history 561 



Modiolopsis solvensis 300 



Mollusks, age of 293 



Cretaceous 478 



Silurian 313 



Monkeys 528 



Monoclinal axes 178 



Monograptus priodon 308 



Mono, Lake 80 



Monotremes 449 



Mont Blanc glacier region 47 



Monticules 90 



Moraines 54 



in Colorado 565 



of ice-sheet 553 



Morosaurus grandis 461 



Mosasaurs 486 



Mosasaurns princeps 487 



Mosely 65 



Moulins 53 



Mountain-ranges, age 261 



cause of pressure producing 263 



fissure- eruptions in 262 



general form, and how produced 251 



history of. 261 



made of thick sediments 257 



metamorphism , 256 



monoclinal 264 



ranges, occurrence of fissures, slips, and 



earthquakes in 262 



once marginal sea-bottoms 258 



proof of elevation by lateral pressure. . . 253 



structure and origin 250 



volcanoes in 263 



Mountain-formation, rate 261 



Mountain-forms resulting from erosion 267 



Mountain-origin 251 



Mountain-sediments, thickness 257 



Mountain-sculpture 266 



Mountain-structure 252 



Murchisonia gracilis 316 



Murray 152 



Myalina Permiana 411 



Mylodon robustus 587 



left hind-foot 615 



Myophoria lineata 417 



Myrmica tertiaria 514 



N 



Naiadites 



Nanosaurus agilis 



Nautilus pompilius 



Neanderthal skull 



Neolimulus f alcatus 



Neolithic age 



man 



Neuropteris 



flexuosa 



hirsuta 



linae folia 



polymorpha 



Newberry 247, 287, 



PAGE 



Newfoundland, Banks of 44 



Niagara Falls, description 12 



gorge, time necessary to form 15 



period 296 



Nile, flood-plain 24 



delta 27 



Nodular or concretionary structure 188 



Nodules, flattened by pressure iyo 



flint, in chalk-cliffs 190 



form 189 



kinds found in different strata 190 



Noeggeratria ( 361 



Norfolk cliffs, effect of waves on 37 



Nordenski51d 494 



Norway, effect of waves on the coast 38 



Notidamus primigenius 518 



Nototherium Mitchelli 588 



Nummulina laevigata 511 



Nummulitic formation 512 



303. 



394 

 462 

 317 

 610 

 396 

 607 

 613 

 458 

 364 

 3C4 

 458 



Obolella crassa 



sagittalis 



Obsidian 



Oceanic agencies, land formed by 



currents, geological agency : 



theory 



Ocean-waves, effect of 



Ochsenius 



Odontolcae 



Odontopteris gracillima 



Wortheni 



Odontopteryx 



toliapicus, skull 



Odontornithes 



Odontotormse 



Oil-bearing strata of the Eastern United 



States 



I Oil-formations 



Oldhamia antiqua 



Olenus macrurus 



Olenellus Gilberti 



Oligoporus nobilis 



Onychaster flexilis 



Onychodus sigmoides 



OQlite 



OOlitic limestones, origin 



Ooze, deep-sea 



globigerina 



Ophiderpeton 



Ophiomorpha 



Orange sand. Mississippi 



Orbulina universa 162, 



Orders, genesis of existing 



Oreodon 



Ores 



metallic, formation 



Organic agencies 



remains, decomposition prevented 



Organisms, progressive change in 



Ormoceras 



tenuifilum 



Ornithes 



299 



300 



207 



44 



42 



39 



34 



423 



491 



364 



364 



521 



521 



491 



491 



387 

 300 

 300 



335 

 424 

 404 

 472 

 162 

 403 

 400 

 547 

 472 

 539 

 535 



140 

 191 

 406 

 318 

 319 

 491 



