INDEX GLOSSARY. 



441 



Bacterium, 227 



Balancers, 587 



Balanoglossus, syn. for Dolichoglossus 



Baleen whale, 665, 796 



feeding of, 844 

 Ball and socket joint, 413 

 Barnacles, 560, 739 



symmetry of, 321 

 Basidiomycetes, 252 

 Basidium, 252 

 Basilar membrane, 398 

 Basket fish, 147, 554 ^ 

 Bast, the fibrous portion of the back, 



74 



Bat, 652 

 Beak, 347 

 Bears, 652, 663 

 Beavers, 652, 660 

 Bed bugs, 591 

 Bees, 590 



Beggiatoa alba, 229 

 Berry, 153 



Bilateral symmetry, 315 

 Bile pigments, 483 

 Bimana, 669 

 Biology, i 

 Birds (see Aves). 

 Birds and reptiles, 792 

 Birds, development of, 806 



glands of, 350 



migration of, 843 



reptilian characters of, 649 

 Blackbirds, 650 

 Black mold, 250 

 Blastula, 196, 197, 712 



of lancelet, 712 

 Blood, origin of, 721 



-vessels, origin of, 721 

 Blue crab, ecdysis of, 76 

 Blue flag, pollination of, 253, 254 

 Blue-green algae, nucleus of, 673 

 Blue molds, 257 

 Body cavity, 469 



fluid, 469 



Bojanus, organ of, 607 

 Bone, 95, 426 

 Bones, origin of, 721 

 Bony labyrinth, 399 

 Book gills, 565 



lungs, 567, 568, 569 

 Bot fly, 761 

 Brachiopoda, 549 

 Brachyura, 561, 562 

 Bract the leaf, usually modified, 

 which subtends a floral shoot. 

 Brain, 444, 580 



Brain, of annelids, 438 

 of crayfish, 100 

 of shark, 102 

 Branchioganoidea, 632 

 Branchiata, 558 

 Branchiura, 559 

 Brand spores, 253 

 Brittle star, 146, 554 . 

 Bryinae, 279 

 Bryophyllum, 34 



Bryophyta Bryophytes, 176, 264 

 Bryozoa, 548 

 Budding, 330, 671 

 in hydra, 499 

 multiplication by, 169 

 Buffalo, 666 

 Bugs, 763 

 Bulbus arteriosus, a muscular chamber 



of the heart, in front of the 



ventricle, 628 

 Bull-bat, 650 

 Butterflies, 586 



polymorphism in, 743 

 Byssus, silky fibres spun from a gland 



in the foot of certain Lamelli- 



branchs, 610 



C symbol for carbon. 



Cactus, 24 



Caddice worm nets, 251, 252 

 shelters, 73, 74 



Caecum ccecum cecum, a pouch 

 or sac. 



Calyptra, part of the archegonium 

 which remains attached to 

 the spore capsule, 277 



Calyx, 122, 131 



Cambium, 75 



Camel, 666 



Cameleon, 645 



Campodea, 159 



Canaliculi, of bone, 426 



Canal system of sponge, 521 



Canidae, 663 



Capillary, small blood-vessels having 

 walls composed of a single 

 layer of thin cells. 



Capitulum, 119 



Caprella, 150 



Capsule, 163 



Carapace, a hard case or shell, 643 



Carbohydrates organic compounds of 

 carbon hydrogen and oxygen, 

 with the hydrogen and oxy- 

 gen in the proportions of 

 H 2 0, 94 



Numbers 



to paragraphs; Black Face numbers refer to figures. 



