CHROMATIN— DEVELOPMENT AND HEREDITY 



EDITH PINNEY 



PLATE 12 



c 





64 





'i\ 





\ 



iV IS 



D 



r %^ 



r^// 



) ( 



^' -"^ 



67a 



( -tjj 





65 



: 'if U ,■ 



I / 





; i 



68^'^ ii^'' ' 



II 



i^ 



287 



