U. S. Geoloeical Sui-vev. 



Plate 1. 



16, 



Tx-i 



Fl§ 5 



~^Z 



Pig, 3. 





"br" 



M: A 



-'■ ' !/p 



ll 







A. S.Packai-d and JHFincrt ii ad 



■ imcLuj- ly. 3aii,l.nK. 



