INDEX. 



AcAiEPH^, u. 73, 92 



Acoelomi, 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. 53 



states, ii. 56 



Amphibia, ii. 120, 122 

 Amphigastrula, 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. 416 



— — gastrula of, i. 444 



"■ — germ-layers of, i. 447 



Amphiozns, mednllarj t«be of, L 418 

 place of, in natural 



system, i. 416 



sexual organs of, i. 425 



— side canals of, i. 423 



significance o^ L 254, 



427 

 Attvphirhina, ii. 97, 101 

 Analogy, ii. 412 

 Anaraniay ii. 97, 120 

 Ancestral series of man, ii. 44, 184 

 Animalcnlists, 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 



Anthropozoic periods, ii. 12, 17 



Antimera, i. 257 



Anus, i. 339 j ?i. 323, 345 



Anus-groove, i. 339 



Anvil (Incus of ear), il 261, 268 



Ape-men, ii. 44, 181 



Apes, ii. 165, 189 



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 

 Appendiculariot i. 459 ; ii. 90 



