IOWA ACADEMY OF SCIENCE ix 
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SiRRiNE, Emma Dysart, Iowa 
Spencer, A. C U. S. Geological Survey, Washington, D. C. 
Todd, J. E Lawrence, Kan. 
Trelease, William Missouri Botanical Gardens, St. Louis, Mo. 
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Weems, J. B Alleghany, West Va. 
Winslow, Arthur Kansas City, Mo. 
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