INDEX 



Acanthocephala, 188 



Acarina, 131 



Acquired characters, 349 



Acridinae, 76, 77 



Adaptation, 36 



Adephaga, 114 



^Epyornis, 271 



Agassiz, 11 



Albatross, 272 



Alligator, 266 



Alternation of generations, 168, 



183, 188 

 Amitosis, 42 

 Amnion, 288 

 Amoeba, 135 

 Amphibia, 246 

 Amphioxus, 228, 231 

 Amphipoda, 58, 59 

 Ancestor of arthropods, 45 

 Anemone, 172 

 Annelida, 203 

 Ant lion, 101 

 Antelope, 295 

 Anthozoa, 172 

 Antimere, 17 

 Ants, 119 

 Ape, 293, 294 

 Aphids, 96 

 Aphis lion, 101 

 Apoda, 246 

 Aptera, 69 

 Arachnida, 123 

 Archseopteryx, 270 

 Archseornithes, 269 

 Aristotle, 6 

 Armadillo, 291 

 Arthrodires, 330 

 Arthropoda, 45 

 Artiodactyla, 295 

 Ascaris, 184 

 Asteroidea, 192 

 Aves, 269 



Bark lice, 72 

 Barnacle, 58, 61 

 Bats, 291 



Bearers of heredity, 354 

 Bears, 292 

 Beaver, 292 

 Bed-bug, 100 

 Bee, 119 

 Beetle, 113 



Bilateral symmetry, 17, 177 

 180, Binary fission, 137, 144, 145 

 Biogenesis, 60, 344 

 Biramous appendage, 45, 57 

 Bird lice, 72 

 Birds, 269, 280 

 Bittern, 272 

 Bladder worm, 181 

 Blending inheritance, 352 

 Body cavity, 154, 183, 186 

 Book lice, 72 

 Bot-fly, 110 

 Brachiopoda, 190 

 Brachycera, 109 

 Brain, 312 

 Brittle starfish, 199 

 Bryozoa, 191 

 Bufo, 251 

 Bug, 95, 98 

 Butterfly, 103, 104 



Caddis-fly, 102 

 Carabidae, 114 

 Carbohydrate, 30 

 Carnivora, 292 

 Cats, 292 

 Cattle, 295 

 Caudata, 246, 250 

 Cecidomyiidse, 109 

 Cell, 15, 37 

 Cell-division, 40 

 Cell theory, 43 

 Centipede, 65 

 361 



