60 



EVOLUTION OF THE HUMAN EYE 



ous and form a considerably broader band. The ciliary 

 muscle in apes (Figs. 15 and 16) and man shows an extensive 



. - 



' .:.-. 8 . ' - 



FIG. 11. Ciliary body of the-rabbit. 





FIG. 12. Ciliary body of the wallaby. 



increase in development on that met with in any of the 

 other mammals. Not only is it wider and longer, but its 



