IQWA ACADEMY OF SCIENCE 
OFFICERS OF THE ACADEMY. 
1907. 
President — John L. Tilton. 
First Vice-President — C. L. VonEnde. 
Second Vice-President — Nicholas Knight. 
Secretary — L. S. Ross. 
Treasurer — H. E. Sum:\ieks. 
EXECUTIVE committee. 
Ex-Officio — John L. Tilton, C. L. VonEnde, Nicholas Knigih', 
L. S. Ross, H. E. SUMMEES. 
Elective — L. Begeman, J. Feed Claeke, R. B. Wylie. 
1908. 
President — Samuel Calvin. 
First Vice-President — F. F. Ai.my. 
Second Vice-President — S. W. Beyee. 
Secretary — L. S. Ross. 
Treasurer — H. E. Summees. 
executive committee. 
Ex-officio — Samuel Calvin, F. F. Almy, S. W. Beyee, L. S. Ross, 
H. E. Summees. 
Elective — R. B. Wylie. L. Begeman, D. W. Moeehouse. 
PAST PRESIDENTS. 
OsBOEN, Heebeet 1887-88 
Todd, J. E 1888-89 
WiTTEE, F. M 1889-90 
Nutting, C. C 1890-92 
Pammel, L. H 1893 
Andeews, L. W 1894 
Noeeis, H. W 1895 
Hall, T. P 1896 
Feankin, W. S 1897 
Macbeide, T. H 1897-98 
Hendeixson, W. S 1899 
Noeton, W. H 1900 
Veblen, a. a 1901 
Summees, H. E 1902 
Fink, Beuce 1903 
Shimek, B 1904 
Aeey, M. F 1905 
Bates, C. O 1906 
Tilton, John L 1907 
