ADVERTISEMENT. 



Bulletins 1-3 (1894-1900) are entirely distributed. 



Bulletin 4 (1908) can be obtained upon payment of 10 cents. The 

 chief articles are: 



A Preliminary Report on the Geology of the Northwest- 

 Central Portion of South Dakota J. E. Todd 



A Preliminary Report on the Geology of Gregory and 



Tripp Counties Ellwood C. Perisho 



(Reprints of this article are available.) 



Notes on the Flora and Fauna of the old Rosebud Reser- 

 vation S. R. Jones, A. B. Reagan 



Bulletin 5 (1912) will be supplied upon request to residents of 

 South Dakota. Others will please send 10 cents. This bul- 

 letin deals in a preliminary way with Mellette, Washabaugh, 

 Bennett and Todd Counties. The articles are: 



The Geography of South-Central S. D S. S. Visher 



The Geology of this Area 



Ellwood C. Perisho and S. S. Visher 



The Biology of this Area S-. S. Visher 



Bulletin 6 will be mailed free of charge to South Dakotans. Other 

 individuals will please send 10 cents. 



Address, the State Geologist, Vermillion, South Dakota. 



