Secretary Wm. J. Haddock: 



I take pleasure in submitting herewith Bulletin No. 4. 



of Volume IV, from the Laboratories of Natural History, of 



the State University of Iowa. 



T. H. Macbride. Editor 

 December, 1898. 



EDITORIAL STAFF. 



Geology, ..... S. Calvin. 



Botany, T. II. Macbride. 



Zoology, . . . . . C. C Nutting. 



