178 



PROCEEDINGS OF THE GEOLOGICAL SOCIETY. 



[Jan. 



• ^ 



ho 



e 



^ 



© 



^ 



e,3uuds " 







r^ 





QQ 





<*> 





CO 





O 





5s. 



«a 



© 



<v 



e 







*a 



§ 



C/3 



© 



j3 



•<«> 



to 



■♦»> 







a 



1 





1 



•aaBnbg 



bh 



3UJIOJB3' 



•i-i 





Ph 







•jaaxjg 





q^ojpt3Ms 





•[TJUBO 



o 



as 



S 



° c 



