54 



DESIGN IN NATURE 



PLATE LXI 



* ■.'■*,"■; K..'-e'o'.;\'C\l<>.-\".'^t 



\ .■.'■S'W';'«>1'.-V ! 



Fig. 1. 



FTC. 3. 



ri«. S 



Fj(i, ii, 



Fiu. 10. 



Fig. 11, 



