aetna, 
ADVERTISEMENT. 
The present Bulletin is the second of a series, which, it 
is hoped, may be issued from time to time, giving the results of 
special work in the laboratories and museum of Oberlin College. 
The first of the Series was a ‘‘Preliminary List of the Flowering 
and Fern plants of Lorain County,” issued in 1889, which, however, 
did not bear the title of ‘‘ Bulletin No. 1” at the time of its pub- 
lication. That number, however, will be assigned to it henceforth. 
The present paper is the result of Mr. McCormick’s pains 
” 
taking collection and study of our native fishes, extended through 
several years, as opportunity has allowed, and resting upon 
specimens preserved in the museum. It is published in harmony 
with the conviction, here cherished, that one of the most import- 
ant duties of any museum is to secure a full representation of the 
natural objects occuring in its own vicinity, and to make them 
available to the cause of science. 
ALBERT A. WRIGHT, 
May, 1892. Professor of Geology and Natural History. 
