706 



INDEX 



echinoderms, 197, 200, 207 ; Euglena, 

 43; frog, 506; Hydra, 113; Lum- 

 briciis, 228; Paramecium, 55 ; Protozoa, 

 68; sponges, 102. 



Belostomatida, 348. 



Belugas, 674. 



Bicidium, 141. 



Bighorn, 670. 



Bile, 481 ; duct, 481. 



Bills, of birds, 618-620. 



Binary fission, of Ameba, 32, 33; of 

 Euglena, 42, 44 ; Paramecium, 59. 



Biogenesis, law of, 302. 



Bipalium, 156. 



Bipinnaria, 197, 210, 211. 



Birds, 575-631 ; altricial, 626; bills, 618; 

 classification, 588; colors, 621; do- 

 mesticated, 630; economic impor- 

 tance, 626; eggs, 624; feet, 618; flight, 

 621; migration, 621 ; nests, 624; pre- 

 cocious, 626; songs, 621; tails, 617; 

 wings, 616. 



Bird, lyre, 617; man-o'-war, 601 ; 

 mocking-, 591, 615; of paradise, 617; 

 secretary, 590, 603; tropic, 601. 



Bison, 644, 669, 670, 683. 



Bittern, 601, 602. 



Bivalve, 261. 



Blackbird, 593. 



Bladder, urinary, 407, 440. 



Blarina, 650. 



Blastoccel, 507, 508. 



Blastoderm, 87, 88, 441. 



Blastoidca, 209, 210, 213. 



Blastophaga, 365. 



Blastostyle, 120, 121. 



Blastula, 87, 88, no, 116, 507, 508. 



Blattida, 343. 



Bliss us, 348. 



Blood, 484. 



Blood-vessels, 282 (see circulatory sys- 

 tem). 



Blubber, 675. 



Bluebird, 591; -gill, 467; -jay, 615; 

 -racer, 561. 



Boa, 538, 539, 559; B. constrictor, 560; 

 Boida, 538, 559; Boince, 539. 



Boar, 671, 685. 



Bobolink, 615. 



Bob- white, 606. 



Bombinator, 512. 



Bombus, 367. 



Bombycida, 353. 



Bombycilla, 615; Bombycittidce, 591. 



Bombyliidce, 358. 



Bombyx, 353, 354. 



Bonasa, 606. 



Bone, 403 ; cartilage, 634 ; cuboid, 637 ; 



membrane, 634; sesamoid, 634; 



unciform, 637. 

 Boophilus, 380. 

 Borer, apple tree, 363; locust, 363; 



maple, 363; wood, 361. 

 Bos, 644, 684. 

 Bothriocephalus, 166. 

 Botryllus, 393. 

 Botryoidal tissue, 238. 

 Bouton, 313. 

 Bovidce, 667, 669-670. 

 Bowfin, 443, 454, 455. 

 Bowman's capsule, 491. 

 Brachiopoda, 185, 186. 

 Brachycera, 356, 358. 

 Brady podida, 66 1 ; Brady pus, 643. 

 Brain, 408, 502 (see nervous system). 

 Branchia, 248. 

 Branchial arch, 425; basket, 416; 



chamber, 284; cleft, 388; heart, 266. 

 Branchiata, 275. 

 Branchiopoda, 292, 293, 299. 

 Branchiosaurus, 525. 

 Branchiostegite, 277, 284. 

 Branchiostoma, 393, 394. 

 Branchipus, 292, 293, 300. 

 Braula, 328. 

 Brissopsis, 205. 

 Bronchus, 639. 

 Bronco, 701. 

 Brontosaurus, 572, 573. 

 Brookesia, 537, 550. 

 Brow-spot, 478. 

 Bruchidcz, 362. 

 Bryozoa, 183-185. 

 Bubalus, 671. 

 Bubo, 612. 

 Buccal cavity, 218, 219, 405, 480; 



funnel, 415. 

 Budding, 80; Grantia, 94, 96; Hydra, 



109, no, 115; Leucosolenia, 93; 



Metridium, 136. 

 Buffaloes, 671. 



Bufo, 512, 519; Bufonidce, 512, 519. 

 Bugs, 296, 301, 343, 345, 348, 362. 

 Bugula, 183, 184. 



