INDEX. 



Acaleph.e, ii. 73, 92 



Accelomi, ii. 75, 92 



Acorn-worms, ii. 86 



Acrania, i. 116 ; ii. 97 



Adam's apple, ii. 336 



Adaptation, i. 158 



After-birth, i. 400 



Agassiz, thoughts on creation, i. 116 



Air-tube (trachea), ii. 330, 333 



Alali, ii. 182 



Allantois, i. 380; ii. 135, 411 



Alluvial period, ii. 12 



Amasta, ii. 146, 204 



Amnion, i. 314, 386 



animals, ii. 120, 133 



sheaths of, i. 387 



water, i. 314 



Amniota, ii. 120, 133 

 Amoeba, i. 142 ; ii. 152 



false feet of, i. 142 



Amoeboid egg-cells, i. 144; ii. 53 



  movements, i. 142; ii.c3 



states, ii. 56 



Amphibia, ii. 120, 122 

 AmpJiigastrula, i. 200, 241 

 Amphigonia, i. 160 

 Amphioxus, i. 413; ii. 98 



blastula of, i. 443 



body-form of, i. 417 



 — cells of, their pedigree, 



i. 467 



chorda of, i. 417 



distribution of, i. 415 



gastrula of, i. 414 



germ-layers of, i. 447 



Amphioxus, medullary tube of, i. 41S 

 place of, in natural 



system, i. 416 



sexual organs of, i. 425 



side canals of, i. 423 



significance of, i. 254, 



427 

 Amphirhina, ii. 97, 101 

 Analosrv, ii. 412 

 Anamnia, ii. 97, 120 

 Ancestral series of man, ii. 44, 184 

 Animalculists, i. 37 

 Animal germ-layer, i. 194, 327 

 • organs, ii. 192, 194 



Anorgana, i. 156; ii. 30 



Anthropocentric conception, ii. 457 



Anthropoids, ii. 177, 189 



Anthropolithic epoch, ii. 11, 16 



Anthropozoie periods, ii. 12, 17 



Antimera, i. 257 



Anus, i. 339 ; ii. 323, 345 



Anus-groove, i. 339 



Anvil (Incus of ear), ii. 261, 268 



Ape-men, ii. 44, 181 



Apes, ii. 165, 1S9 



eastern, ii. 172, 189 



flat-nosed, ii. 172, 189 



 narrow-nosed, ii. 172, 189 



question as to descent of, ii. 



165, 441 



tailed, ii. 172, 189 



western, ii. 172, 189 



Aorta, i. 265; ii. 378 



roots of, ii. 375 



stem of, ii. 375 



Aortal arches, ii. 375, 378 

 Appendicularia, i. 459 ; ii. 90 



