INDEX. 



503 



Touch, organ of, ii. 190, 238 

 Transition forms, i. 117 

 Tread, i. 138 

 Triassic period, ii. 14, 19 

 Tribal history, i. 7, 24 

 Trophic germ-layer, i. 239 

 Tub mF allodia-, ii. 431 

 Tube-hearts, ii. 120 

 Tunicata, ii. 83, 92 

 Turbellaria, ii. 79 

 Twixt-brain, ii. 220, 232 



jaw, ii. 246 



Tympanic cavity, ii. 261, 268 



membrane, ii. 261, 268 



Tympanum, ii. 261, 268 



Types in animal kingdom, i. 56, 216 



theory of, i. 56, 246 



U 



Ulna, ii. 278, 304 



Ungulata, ii. 160, 188 



Unitary conception of the world, i. 



17 ; ii. 456 

 Urachus, ii. 413 

 Ureter, ii. 413 

 Urethra, ii. 423, 431 

 Urinary bladder, ii. 413 



ducts, ii. 406 



organs, ii. 403 



sac, i. 379 



sexual cavity, ii. 419 



- sexual duct, ii. 403 

 system, ii. 403 



Uterus, ii. 417, 431 



bicomis, ii. 418 



masculinus, ii. 419 



Uvula, ii. 430 



Vagina, ii. 417, 431 



Vampyrella, ii. 48 



Van Beneden, Eduard, i. 60, 209 ; 



ii. 398 

 Vasa deferentia, ii. 403, 429 



umbilicalia i. 399 



Vascular system, ii. 38 i 



Vegetative germ-layer, i. 196, 327 



organs, ii. 193, 194 



Veins, i. 393 

 Ventral cavity, i. 316 



 plates, i. 316 



vessel, i. 423 



wall, i. 316 



Ventricle of heart, ii. 374 



Vermal appendage of coecuni, ii. 3 14 



Vertebra?, ii. 280 



number of, ii. 283 



Vertebral arches, ii. 284 



bodies, ii. 284 



canal, ii. 284 



column, ii. 280 



Vertebrarium, ii. 278 



Vertebrates, ii. 92 



Vertebrates, ancestors of, ii. 185 



mental capacities of, 



ii. 446 



pedigree of, ii. 93 



system of, ii. 97 



Vesicula blastodermica , i. 290 



germinativa, i. 133 



prostatica, ii. 419 



umbilicalis, i. 377 



Vestibulum vagina?, ii. 431 

 Virginal generation, i. 170 

 Vitellus, i. 135 



w 



Wagner, Mokitz, i. 114 

 Wallace, Alfred, i. 98, 99 

 Water, amount of in body, ii. 7 

 Whale-like Animals, ii. 160, 189 

 Whales, ii. 160 

 Wolff, Caspar Friedrich, i. 40 



his life, i. 41 



his Natural Philosophy, i. 47 



on formation of intestine, i. 44 



on germ -layers, i. 45 



Theoria Generationis, i. 41 



Wolffian bodies, ii. 411 



duct, ii. 414, 431 



Wolff's primitive kidneys, ii. 411, 431 

 Woolly hair of embryo, ii. 206 

 Worms, i. 246 ; ii. 74 



ancestors of, ii. 73 



tribe of, ii. 73 



Wrist, ii. 278 



