Secretary Wn. J. Haddock: 



I take pleasure in submitting herewith Bulletin No. 2, 

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

 the State University of Iowa. 



T. H. Macbride, Editor. 

 May, /go/. 



EDITORIAL STAFF. 



Geology, S. Calvin. 



Botany, T. H. Macbride. 



Zoology, C. C. Nutting. 



