page 1577 



1583 

 1592 

 1593 

 1594 

 1594 



1595 

 1595 

 1595 

 1600 



1602 

 1602 

 1605 



Epilegomena 



The Two Problems of Embryology 1 6 1 3 



The Cleidoic Egg and its Evolution 16 1 3 



Chemical Synthesis as an Aspect of Ontogeny 1 623 



Biochemistry and Morphogenesis 1 624 



Transitory Functions in Embryonic Life 1627 



The Theory of Recapitulation 1629 



Recapitulation and Substitution ' 1632 



Chemical Recapitulation 1638 



Provisional Generalisations for Chemical Embryology 1 647 

 The Organisation of Development and the Development of Organisation 1659 



The Future of Embryology 1 664 



PART IV 



Appendices 



i. Normal Tables of Magnitudes in Embryonic Growth 1669 



ii. A Chemical Account of the Maturation of the Egg-cell 1679 



iii. The Chemical Changes during the Metamorphosis of Insects (by 1685 



Dorothy Needham) 



iv. The Development of the Plant Embryo from a Physico-chemical View- 1 7 1 1 



point (by Muriel Robinson) 



PART V 



Bibliography and Author-Index 



Subject-Index 



Index Animalium 



1725 

 1971 

 2013 



