TABLES 



27. Ash of the avian egg .... 



34. Distribution of amino-acids in egg-proteins 



47. Ash content of egg . 



195. Enzymes in the hen's egg 



199. Enzymes in the human embryo 



201. Enzymes in the pig embryo 



220. Placental enzymes . 



227, Passage of substances through the placenta 

 Appendix 1, Table 3. Embryonic growth of the hen 



