The Wisconsin Geological and Natural History Survey was established 

 by act of the Legislature in 1897. Its publications are issued as bulletins, 

 which are numbered consecutively, and each bulletin is independently 

 paged and indexed, no attempt being made to group them in volumes. 

 The bulletins are issued in three series: 



A. Scientific Series. The bulletins so designated consist of original 

 contributions to the geology and natural history of the state, which are of 

 scientific interest rather than of economic importance. 



B. Economic Series. This series includes those bulletins whose in- 

 terest is chiefly practical and economic. 



C. Educational Series. The bulletins of this series are primarily de- 

 signed for use in the schools, and discuss the subjects of which they treat 

 from this point of view. 



The first bulletin to be issued belongs to the Economic Series, and is 

 entitled: On the Forest Resources of Northern Wisconsin. F. Roth, 

 Special Agent, U. S. Department of Agriculture. Pp. 78. 1 map. 



The second economic bulletin is ready for the press, entitled: The Build- 

 ing Stones of Wisconsin. E. R. Buckley, Assistant Geologist on the Wis- 

 consin Geological and Natural History Survey. 



In the Scientific Series one bulletin has been issued (No. II.): The 

 Instincts and Habits of the Solitary Wasps. G. W. Peckham and E. G. 

 Peckham. Pp. 241. 14 plates, of which 2 are colored. 



A second bulletin of this series (No. Ill) is in press. 



A Contribution to the Geology of the Pre-Cambrian Igneous Rocks of 

 the Fox River Valley, Wisconsin. Samuel Weidman, Assistant Geologist 

 Wisconsin Geological and Natural History Survey. 



In the Educational Series three bulletins are in preparation: 



The Physiography of Southern Wisconsin. G. L. Collie, Professor of 

 Geology, Beloit College. 



The Physical Geography and Geology of the Dells of the Wisconsin and 

 Devil's Lake. R. D. Salisbury, Professor of Geographic Geology, Univer- 

 sity of Chicago. 



The Forest Trees of Wisconsin. L. S. Cheney, Assistant Professor of 

 Pharmaceutical Botany, University of Wisconsin. 



All correspondence relating to the Survey should be addressed to 



E. A. BIRGE, Director, 



Madison, Wis. 



