SUBJECT INDEX 



When a page-reference denotes the beginning of a lengthy discussion, it is followed 

 by the letter *s', e.g. 124s. For certain common technical words, references are given 

 only to a few key places which can serve as a definition. 



Acetabularia, 377, 384 

 Acrasiales, 434 

 acrencephalon, 456 

 activation, egg, 6, 47, 106 



genes, 21, 348s, 412 

 alkaptanuria, 378 

 allometry, 287s 

 alternative paths, 179, 199, 340» 349, 365, 



406s 

 amino-acids, 88, 205, 206, 212, 215 

 amnion, 237, 240 

 Amphioxus, 105s 

 anaerobiosis, 203, 205 

 anthocyanins, 381 

 antimetabolites, 93, 205 

 anti-mitotic substances, 70, 74, 305, 431 

 ants, 131 

 anus, 250, 264 

 aortic arches, 257 

 apical cap, 276, 431 

 arachnids, 123 



archencephalon, 199, 216, 456 

 archenteric canal, 235 

 archenteron, 164, 250 

 area pellucida, 157 

 arginine, 379 



aristopedia, 141, 340, 375, 403 

 armadillo, 242 

 Ascaris, 352 



ascidians, 41, 105s, 361, 384 

 Aspergillus, 374, 381 

 autocatalysis, 193, 282, 407, 409 

 autoradiography, 204, 211, 214 

 axial gradiemts, 196, 200, 205, 314s 



bacteria, 376, 132 

 balancer, 221 

 Balfour's rule, 58 

 bees, 132 

 Beroe, 60 



bilateral symmetry, 6, 48, 53, 69, 92, 106, 



119, 146s, 227, 230, 238, 242, 247s 

 biological time, 290 

 birds, cleavage etc., 154s 



gastrulation, 167, 243 s 

 bidiorax, 141, 340 

 blastema, 192, 303s, 323s 

 blastocoel, 81 

 blastocyst, 236 

 blastoderm, amphibian, 253 



bird, 156s 



comparative, 244 



insect, 119 



teleost, 226s 

 blastokinesis, 122, 123 

 blastomeres, 59 

 blastopore, closure, 166 



position, 150, 154 

 blastula, 6, 57 

 blastulation, 153 

 blood, 191, 251 

 bone, 277 



boundary conditions, 423, 425 

 brain, 253s 

 budding, 303 



calorific value, 453 



canalisation, 20, 330, 347, 349, 362 



cancer, 307, 399 



Cartesian diver, 200s 



cartilage, 305, 342 



cell, adhesiveness, 416, 437, 444s, 450 



attractions, 436, 437 



basic types, 14 



lethals, 363 



movements, 433s 



structures, 376s 



surface, 5, 413, 438s 

 centrifugation, 41, 55, 68, 90, 102, 114, 

 133, 199,213,219 



