INDEX. 



425 



Brach'ial (Gr. /Spa^iov, the arm), 

 belonging to the arm. 



Brach'iopods(Gr. fipa-%iov, the arm ; 

 TroSa, feet), acephalous mollusks, 

 with two long spiral fleshy arms 

 continued from the side of the 

 mouth, xxiii. 



Brachyu x ra (Gr. (Spayvc, short, 

 oufitt, tail), Crustacea with short 

 tails, as the crabs. 



BrachyuVous, short tailed, usually 

 restricted to the Crustacea. 



Brain, 78; in man, 85 88; in fishes, 

 92; in the amphibia, 93 ; in scaly 

 reptiles, 94 ; in birds, 95 ; in 

 mammalia, 96. 



Bran'chia (Gr. /Spayx 1 -*, the gills of 

 a fish), the respiratory organs 

 which extract oxygen from the air 

 contained in water. 



Bran'chifers (Gr. /Spory^trt, gills ; 

 Lat./ero, I bear), univalve mol- 

 lusks breathing by gills, xxiii. 



Bran'chiopods (Gr. /S^ay^ta, gills ; 

 TroSa, feet), Crustacea, in which 

 the feet support the gills. 



Bron'chi, tubes branching from the 

 windpipe in the lungs. 



Bron'tes, a genus of the family Tri- 

 lobitidas. 



Bryozo'a (Gr. fipvov, moss ; wov, 

 animal), a class of highly organ- 

 ized polyps, most of the species 

 of which incrust other animals or 

 bodies like moss, xxiii. 664. 



Buc'cal (Lat. bucca, mouth or cheeks), 

 belonging to the mouth. 



and C^CA (Lat. c&cus, 

 blind), a blind tube, or produc- 

 tions of a tube, which terminate 

 in closed ends. 



CalcaVeous (Lat. calx, chalk), com- 

 posed of lime. 



Camel, skeleton of the, 291. 



Campanula' ria, alternate generation 

 of the, 350352. 



Canine' (Lat. canis.a dog) teeth, 341. '. 



Canker-worm, metamorphoses of the, 

 552. 



Can'non-bone, the metacarpal bone 

 of the horse and stag, 282, 286. 



Cap'illary vessels (Lat. capillus, a 

 hair), the minute vessels through 

 which the arteries and veins are 

 united, 358, 371. 



Carapace', the upper shell of the 

 crab and tortoise, 318. 



Car'bon (Lat. carbo), the basis of 

 charcoal and most combustibles. 



Carboniferous, or coal. formation, 650, 

 669. 



Car'dia (Gr. Kapdia, the heart or 

 stomach), the opening which ad- 

 mits the food into the stomach ; 

 also the region called the pit of 

 the stomach. 



Carniv'ora (Lat. caro, flesh ; voro, 

 I devour), animals which feed on 

 flesh, xxi. 



Car'pus (Latin), the wrist, 275. 



Cartilaginous, or gristly, tissue, 42, 

 52. 



Cau'dal (Lat. cauda, a tail), belong- 

 ing to the tail. 



Cau'da Equi v na (Lat. horse-tail), the 

 leash of nerves which terminates 

 the spinal marrow in the human 

 subject, and the analogous part in 

 the lower animals. 



Cell (Lat. cello), the universal ele- 

 mentary form of every tissue, 56. 



Cellule\ a little cell. 



Cel'lular tissue (Lat. cella, a cell), 

 the elastic connecting tissue of 

 the different parts of the body 

 which everywhere forms cells or 

 interspaces containing fluid,53,56. 



Cen'tipecle (Lat. centum, a hundred ; 

 pes, a foot), a genus of insects 

 with very numerous feet. 



Cen'trum (Gr. Ktvrpov, centre), the 

 body or essential elements of a 

 vertebra, around which the other 

 elements are disposed. 



Cephal'ic (Gr. Ki<pa\rj, head), be- 

 longing to the head. 



Cephalopoda (Gr. KifyaXr], head ; 

 , feet), mollusks in which 



