xviii THE STUDY OF EVOLUTION 



fio. nos 



9. Diagram of alteration in constitution of biophoric molecule . 89 



10. Graphia formula of the Pyrimidine ring . . . .89 



11. Diagram of production of multiple side-chain elements . . 90 



12. Diagram of interchange of allelomorphic side-chains between 



biophores of paternal and maternal origin . . .94 



13. The different forms of chromosomes in the human spermato- 



cyte (after Moore and Arnold) . . . . .192 



14. Cells of the salivary gland to show production and discharge 



of " plasmosomes " (after Maximow) . . . .199 



15. Aberrant mitoses (after v. Hansemann and Pianese) . . 201 



16. Diagram of constitution of protein ring . . . .20V 



17. Diagram of relationship between nuclear biophores and cyto- 



plasmic proteins . . . . . . .208 



18. Chromosomes, chromomeres and " ids '' . . . . .214 



19. Diagrammatic representation of constitution of protein or 



peptone nucleus . . . . . . . .222 



20. Diagram of growth of biophoric molecule . . . .228 



