PROCEEDINGS 
OF THE 
EIGHTEENTH ANNUAL SESSION 
OF THE 
IOWA ACADEMY OF SCIENCES. 
The eighteenth annual session of the Iowa Academy of 
Sciences was held in the physics lecture room of the State 
University of Iowa at Iowa City, April 14 and 15, 1904. 
In the business session the following matters of general 
interest were passed upon : 
REPORT OF THE SECRETARY. 
To the Members of the Iowa Academy of Sciences: 
During the past year three additions were made to the list of fellows. 
Three fellows, Messrs. Eckles, Stull and Wilder, having removed from the 
state, were transferred to the corresponding membership list. For failure 
to pay membership dues five fellows were dropped from the list. The num- 
ber of associate members was increased by the addition of seven new names. 
Seventeen associate members withdrew or were dropped from membership 
for non-payment of dues. The revised roster shows sixty -three fellows, 
forty-four associate members and fifty- two corresponding members, making 
a total membership of one hundred and fifty-nine. Five fellows, Messrs. 
Frye, Keyes, Leonard, Price and Repp, having removed from the state, 
should be transferred to the list of corresponding members. The secretary 
has not been informed of any loss by death in the membership of the Acad- 
emy during the past year. 
It is evident that there should be a determined effort made to increase the 
membership of the Academy. In a state as large and prosperous as ours, 
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