INDEX 



Adelsberg, Caverns of, 195 



JEpyornis, The, 252 



Age of Lakes," The, 257 



Air, how it may become solid, 84 



Aleutian Islands, Volcanoes of the, 97 



Algae, 103 



Alluvium, 54 



America in the Devonian Period, 217; in the Glacial 



Period, 271 

 Ammonites, 210 

 Amoeba, The, 100 

 Andes, Volcanoes of the, 97 

 Andesite, 184 

 Andromeda, 92 

 Animal Life, The first, 104 



Animal Species of the Carboniferous Period, 229 

 Ant, White, The work of the, 44 

 Anthracite, 133 

 Apes, The first, 268 

 Apteryx, The, 252 

 Archaean Era, 129, 199 

 Archceopteryx, The, 243 

 Archelon, The, 249 

 Arches, The strain on, 25 

 Aristotle and Earthquakes, 176 



293 



