390 



INDEX 



atoms, 233 

 auricles, 100, 262 

 axis cylinder, 296 



B 



bacillus, 317, 323-326 



Bacillus tuberculosis, 322, 323 



backswimmers, 33, 34 



bacteria, 150, 261 



balancers, 40 



Balanoglossus, 155 



barnacles, 94-97 



Basilarchia archippus, 23 



bass, 167 



bathing, 286 



Batrachians, 157, 169-175 



bats, 185. 218 



beak, 84 



bears, 223 



beavers, 216, 217 



bedbugs, 32 



bees, 56-64 



beetles, 18, 51-55 



Behring, von, 326 



bile, 251 



birds, 183-208, 338-340, 350-352 



birth rate, 386 



bladder, 277 



bladder worm, 127-129 



Blattidae, 18, 19 



blood, of clam, 100 



of crayfish, 88 



of earthworm, 117 



of grasshopper, 7, 8 



of man, 259-265 

 blow flies, 42 

 boa constrictor, 179 

 boils, 321 



Bombyx mori, 26, 27 

 bones, 287-291 

 bot flies, 43 

 Bovidae, 221 

 brain, of Amphioxus, 155, 156 



of clam, 100, 101 



brain, of crayfish, 88 



of earthworm, 118 



of grasshopper, 8 



of man, 230, 231, 294, 295, 



298-303 



branchiae, 85, 86 

 Bright's disease, 279, 377 

 brittle stars, no 

 bronchi, 273 

 Buffalo gnats, 44 

 Bufonidae, 173 

 bugs, 31-34 

 bull-frog, 172, 173 

 bumble bees, 63 

 Burbank, L., 358 

 Burroughs, J., 207 

 byssus, 102 



cabbage butterfly, 20, 2 1 



caddis flies, 70, 73 



calciferous glands, 117 



camel, 220 



canine or eye teeth, 247 



capillaries, 264-266 



carapace, 84, 86 



carbohydrates, 237, 249, 251, 255 



carbon, 233, 234, 235, 236 



carbon dioxide, 236, 238, 239, 240, 



269, 271, 273, 275, 276 

 Carboniferous period, 349 

 Carnivora,'223 

 Carolina locust, 1 2 

 carpals, 290 

 cartilage, 243, 287 

 casein, 260 

 cats, 207, 208, 223 

 cells, 240-244 

 centipedes, 75, 76 

 Cephalopoda, 105-107 

 Cephalothorax, 84, 88 

 cerebellum, 299-301 

 cerebral hemispheres, 300-303 

 cerebro-spinal system, 296 



