S.A. Assn. for Adv. of Science. 



1918. Pl. 14. 



A. — One-third actual size. 





'k'-^, 



Jt 

 ■'<. 





#^ 



K^h 







B. — One-seventh actual size. 



Miss M. Wilman.—Thei Engraved Rock of Lqe'. 



