INDEX 



Crust of the Earth, The study of the, 198 

 Cyclones, 42 



Dead Sea, The, 58 



Deltas of rivers, 20 



Deposits, how they are made, 20, 45 



Depths of the sea, 180 



Devonian Period, 212; fishes of the, 216; vegetation, 216 ; 



insects, 216; Europe and America, 217 

 Diamonds, how they are produced, 132 

 Dinoceras, The, 266 

 Dinosaurus, The, 240 

 Diplodocus, The, 241 

 Dolickosaurs, 249 

 Dover, The chalk cliffs of, 21 

 Dredging, The necessity for, 20 

 Dryopithecus, The, 268 

 Dryptosaurus, The, 253 

 Dwina, Fossils in the banks of the, 232 

 Dykes, 105 



Earth, The, not so solid as it looks, 23 ; its resemblance to a 



golf ball, 25 ; its uneven surface, 31 

 Earth, Weighing the, 88 

 Earthquake districts, 171 

 Earthquake, The sensation of an, 137 ; the cause of an, 166, 



170 



Earthquake waves, 174 

 Earthquakes, 23; San Francisco, 140; New Madrid, 140; 



Lake Baikal, 140 ; Iceland, 141 ; Carinthia, 141 ; Japan, 



141 ; Ocean, 143 ; Lisbon, 148 ; Sicily, 149 ; Chili, 150 ; 

 296 



