INDEX. 



503 



Tonch, organ of, ii. 199, 238 

 Transition forms, i. 117 

 Tread, i. 138 

 Triassio period, ii. 14, 19 

 Tribal history, i. 7, 24 

 Trophic germ-layer, i. 239 

 Tubm Fallopice, ii. 431 

 Tnbe-hearts, ii. 120 

 Tunicata, ii. 83, 92 

 Turhellariaj ii. 79 

 Twixt-hrain, 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, 246 



theory of, i. 56, 246 



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. 408 



sac, i. 379 



sexnal cavity, ii. 419 



sexnal duct, ii. 403 



system, ii. 403 



Ute>-us, il. 417, 431 



■ bicornis, ii. 418 



- masculinus, ii. 419 



Uvula, ii. 430 



Vagina, ii. 417, 431 



Vampyrella, ii. 48 



Van Beneden, Eduard, i. 60, 209 ; 



ii. 898 

 Vasa deferentia, ii. 403, 429 



umbilicalia i. 399 



Vascular system, ii. 381 



Vegetative germ-Iayer, 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 ccecum, ii. 344 



VerfcebriB, ii. 280 



number of, ii. 283 



Vertebral arches, ii. 284 



■ bodies, ii. 284 



canal, ii. 284 



column, ii. 280 



Verteirarium, ii. 278 

 Vertebrates, ii. 92 

 Vertebrates, ancestors of, ii. 185 



mental capacities ol', 



ii. 446 



pedigree of, ii. 93 



system of, ii. 97 



Vesicula hlastodermica , i. 2U0 



germinativa, i. 133 



prostatica, ii. 419 



umhilicalis, i. 377 



Vestibulum vaginw, ii. 431 

 Virginal generation, i. 170 

 ntellus, i. 135 



w 



Wagner, Mokitz, i. 114 

 Wallace, Alfred, i. 98, 99 

 Water, amount of in body, ii. 7 

 Whale-like Animals, ii. 160, ISO 

 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 



