ADVERTISEMENTS. a 
Burlington Crinoids. 
| 
| 
1 HAVE for sale fine speci- 
mens of many species of 
W F =| ol: the famous BURLINGTON CRINOIMS. 
Address: 
A Complete Set p. F. M. FULTZ, 
The American Nat- S der 
uralist—BOUND. z 
The Edwards & Docker iD. 
518 Minor St., ; 
PHILADELPHIA. 
OF INTEREST TO ALL STUDENTS AND LOVERS OF NATURE. 
THE OBSERVER 
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. 
