1 s: 
AMFRICAN GEOLOGIST. 
.iONTHl \ lOURNAl -K fEOLOGY 
A] 
cn 
IrinitS A.\ ROr: TETORS. 
Pkof. Samuel Cal\ i ^, miversity oj i. . - lova < iiy, lotea. 
Dk. Edward W. Ci a vpole, Bu<-hM CoUe.j~ Ahron, <>. 
Dr. PersifokFkazkh. Pranklm Iwtitute, j-kiladelphiO', Pe*^n 
u« l.Ewis E. Hicks i:nii)ersity of iiehrat^ ^^^^*^ ■ ^'^^■ 
•xu, Ann Arbor, Micii. 
»ta, Minneapolifs, Minn. 
VOLl 'I' 
January lo/u-Nt, i 
889. 
( MINNEiPOLIS, MINN. 
\ ./1889. 
BNE I'KINTING COMPANY. 
