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 i, Table 3. Embryonic growth of the hen 



