ADVERTISEMENTS. t 
For Sale 
Fossil Leaves, Dakota 
E 6 F c al Q Group Cretaceous. 
3 sets of 50, 30, and 20 species and 
A G ] varieties, at $15.00, $10.00 and $5.00 
omp ete Set of each. Also a good set of 20 for $2.50. 
The American Nat- NO EXCHANGE. 
list— BOUND WRITE FOR LISTS. 
uralist— 
"Charles H. Sternberg, 
The Edwards & Docker Go. Timna 
518 Minor St., FA A’ REDUCED 
he aa KS. 
PHILADELPHIA. ticing physician Wy 30. year iy ok are 
ng, wrink bi 
confidentially. For particulars 
DR. SNYDER MeVieker’s Theater, ‘CHICAGO, Ley 
} Or 907 Broadway, NEW YORK CITY, 
OF INTEREST TO ALL STUDENTS AND LOVERS OF NATURE. 
THE OBSERVER 
DEVOTED TO 
All Departments of Nature Studies. 
OUR MOTTO: 
‘Keep Your Eyes Open” 
(To observe the wonders and beauties of Nature.) 
~ Official Organ of the Agassiz Association. 
Consists of Three Departments: 
1. The Outdoor World. 2. Agassiz Association. 
Practical Microscopy. 
: —— 
E. F. BIGELOW, Managing Editor and Publisher, Portland, Conn. 
