Development of organs of sensation 331, 393, 414 



Development of skeleton 333, 390, 411 



Development of vascular system 56, 57, 184, 254, 256, 266, 



317, 323, 327, 331, 333, 397, 412 

 Directivity (Zielstrebigkeit) 495 - 511 

 Double symmetrical development 357 



Echinodermata envelopment) 578 - 582 



Embryonic disc 292 



Embryonic membranes 227 - 236, 415 



Embryonic plates (homology to layers of body of Coelenterata 



348 

 Embryo separation 322, 324, 327, 328 

 Embryonic vesicle 408, 416, 449 

 "Enclosing" of the embryo 32, 38, 39, 46, 139 

 Epigenesis 32, 33 - 41, 43, 46, 63, 77, 86, 121 - 140, 154 

 "Essential power" of Wolff 51, 62, 64, 105 - 113, 119 

 Evolution, preformation 32, 33 - 41, 43, 46, 63, 122, 125, 154 



False amnion of Pander 259 



False amnion of Wolff 67, 75, 79, 91, 320 



Final (Ziel) and target CZweck) 4^8 - 501, 505, 510 



Genealogy of blastomeres 558 

 Graafian follicle 285, 291, 293 



Head cap 316, 319 

 Head portion 251, 254 

 Histological isolation 343, 389 



Idea of Polarity 143 

 "Internal model" of Buffon 41 

 Intestinal navel 324, 378 

 Intestinal plates 321 



Larvae of molluscs 573, 575 



Larvae of parasitic of Crustecea 529, 530 



Larvae of ring worms 569 



Life's power 195, 504 



"Living particles" of Buffon 41 



"Mesentric folds" of Pander 254 



"Monads" of Leibnitz 38 



Monstrosity 19, 23, 31, 89 - 104, 131, 453 - 465 



668 



