INDEX. "01 
Astrea pallida, 81 
Astrangia, 80 
Astrangia Dane, 81 
Astrogonium, 196 
Astroides, development of, 82 
Astropecten, 196 i 
Astrophyton Agassizii, 193 
Atalapha noveboracensis, 591 
Ateles, 560, 620 
Atlantosaurus, 515 
Atoll, 89 
Atrium, 388 
Auk, great, 541 
Aurelia aurita, 63 
flavidula, 65 
Auricularia, 214 
Aurochs, 612 
Autechinida, 205, 208 
Autolycus, 173 
Automata, animals as, 682 
Aves, anatomy of, 518, 525 
characters of, 518, 557 
development of, 532 
feathers of, 528 
moulting of, 534 
nesting habits of, 536 
sexual colors of, 535. 
skeleton of, 518, 519, 521 
songs of, 535 
topography of, 520 
Axinella polypoides, 48 
Axolotl, 479 
Aye-aye, 619 
Basoort, 620 
Balena mysticetus, 592 
Baleeniceps rex, 545 
Balenoptera boops, 592 
Balanoglossus aurantiacus, 157 
Balanus balanoides, 278 
Balatro, 137 
Baphetes, 483 
Barnacle, 272 
anatomy of, 273 
Barramundi fish, 480 
Bathycrinus, 183 
Bats, 588 
Batrachia, breeding habits of, 484 
characters of, 464, 487 
development of, 476 
gills of, 468 
poison of, 475 
reproduction of lost parts 
of, 481 
skeleton of, 465 
teeth of, 467 
viviparous, 479 
Bear, 615 
Beaver, 584 
Bee, 359, 365 
Beetles, 372 
oil, 372 
Belone longirostris, 454 
Bilateral symmetry of Ctenopho- 
ra, 92, 93 
Echinoderms, 178, 202 
Bilharzia hematobia, 110 
Bill-fish, 454 
Bimana, 624 
Bipalium dendrophilus, 101 
Bipinnaria, 195 
Birds, diving, 541 
of prey, 548 
perching, 551 
raptorial, 548 
swimming, 548 
(Also see Aves.) 
Bison, 611 
Bladder, swimming, of fishes, 442 
Blastoidea, 189, 191 
Blind fish, 442, 444, 458 
shrimps, 315 
Blissus leucopterus, 349 
Blister beetles, 353 
Blood, circulation of, 635 
Blood corpuscles, 8 
Blue-fish, 455 
Boa-constrictor, 496 
