MONOGRAPH XLVIII PL. LXVI 
U. S. GEOLOGICAL SURVEY 
AQ «, GE ep om 
+ aN \ = : 
X , . \ = ‘i 
\ , Dh 
i $e) SONS 
= 
es 
Gs 
AMM 
ll es : 
7 
SN 
|. 
FERNS FROM THE SHASTA FORMATION OF CALIFORNIA AND OREGON. 
