INDEX 



PRIMITIVE STREAK AND ORI- 

 GIN of MESODERM 455 



Neural plate 459 



Notochord 458 



FOUR TO SIX SOMITE STAGE . . . 465 



FIRST HALF DAY 470 



Brain differentiation 472 



Lengthening of fore-gut 475 



SECOND HALF OF SECOND DAY. 



Brain 476 



Blood-corpuscle path 483 



Circulatory system 480 



Excretory system 484 



Torsion 480 



E X T R A-E MBRYONIC MEM- 

 BRANES 485 



Allantois 487 



Amnion 487 



Chorion 488 



Serosa 487 



Yolk-sac . . . 485 



DEVELOPMENT OF THE THIRD 



DAY ..480 



Circulatory system 500 



Digestive tract 492 



Liver 496 



Lungs 495 



Nervous system 490 



Optic vesicles 490 



Pancreas 497 



Thymus gland 497 



Thyroid gland 497 



Visceral arches 498 



Visceral clefts 498 



DIFFERENTIATION OF SOMITES.502 



Excretory system 503 



DEVELOPMENT OF THE FOURTH 

 DAY 



Adrenal, bodies 520 



Allantoic circulation 524 



Circulatory system 520 



Excretory system 518 



Ganglia of cranial nerves 513 



Heart 529 



Intra-embryonic circulation 526 



Nervous system 511 



Organs of special sense 514 



Reproductive system 519 



Skeletal structure 516 



Spinal cord 513 



Veins 531 



COELOM AND MESENTERIES 536 



DEVELOPMENT OF THE FIFTH 



DAY 538 



Heart 540 



Limbs 538 



Skull 538-540 



CHIGGERS, chig'ers (F. chique, lo- 

 cal) 350 



CHILOMONA8, kilom'onas (G. cheilos, 

 lips + monas, a unit) .... . . 150 



CHILOPODA, kilop'oda (G. cheilos, 



lip + pous, foot) 422 



An order of Opisthogoneata. 

 CHI M AE RA MONSTROSA, kime'ra 



(G. chimara, a fabled monster) 6-'i2 



CHIMAPHILA, kimiif'O'lali G. cheima, 



winter + philos, loving) 23.'i 



CHIMPANZEE, chimpan'ze (Sp. chim- 



pance, a native name) 660 



CHIRONOMIDAE, kironom'ide, (G. 



cheir, hand -j- namenin, to manage). 345 

 CHIRONOMUS (G. cheironomos, one 



who moves the hands ) 330 



CHIROPTERA, kirop'tera (L. chirop- 



teras, wing-handed) 426. 658 



CHIROPTERYGIA, kirop'terlg'ta (G. 



cheir, hand -f- pteron, a wing) 707 



CHITIN, kl'tin (G. chiton, a tunic) . . 93 



A carbohydrate derivative forming 

 the skeletons of Arthropods. 



CHLORAGOGEN CELLS 259 



CHLOROPHYCEAE, kldro'fl'see (G. 

 kloros, yellowish-green + phykos, 



sea-weed) 204 



CHLOROPHYL, klo'rofil (G. chloros, 



grass green + phyllon, leaf) 185 



Chemical formula of 186 



CHLOROPLAST, klo'roplast (G. 

 . chloros + plastos, moulded) .. 185, 204 

 'CHLOROSIS, kloro'sis (G. chloros, 



grass green ) 303 



A peculiar form of anaemia, 

 characterized by a green-colored 

 skin. 



CHOANA, koh'anah (G. funnel) 



515, 582, 730 



CHOA NAFLA GELLA TA , ko'anofla jela- 

 ta (G. choane, funnel + flagellum, 



whip) 151, 418 



Mastigophora with a contractile 

 collar from which the single flagel- 

 lum extends. 



CHOLAEPUS DIDACTYLU8 659 



CHOLEDOCHUS, DUCTUS, koled'okus 



(G. choledochos, containing bile)... 497 

 CHONDRICONTS, kond'rikont's (G. 

 vhondros, cartilage + kontos, pole). 91 



Rod-shaped chondriosomes. 

 CHONDRIOMITES, kond'riomites' ... 91 



Granular chondriosomes. 

 CHONDRIOSOMES, kondriosomz' (G. 



chondros + soma, body) 91 



CHONDROCRANIUM, kon'drocray'- 

 neeum (G. chondros, cartilage; kra- 



nion, skull ) 614. 687 



CHONDROSTEI, kondross'tee'eye (G. 

 chondros, cartilage; osteon, bone) . . 



425, 642 



CHORDATA, classification of 



430, 543, 639-663 



Definition of .... . .638 



