BOTANICAL uanDEN. 



BULLETIN OF THE UNIVERSITY OF WISCONSIN 



Science Series, Vol. 1. No. 4, pp. 109-156, pls. 4-8. 



A CONTRIBUTION TO THE MINERALOGY OF 



WISCONSIN. 



BY 



WILLIAM HERBERT HOBBS 



Assistant Professor of Mineraloijy and Petrology 



PUBLISHED BY AUTHORtTY OF LAW AND WITH THE APPROVAL OF 

 THE REGENTS OF THE UNIVERSITY 



MADISON, WIS. 

 PUBLISHED BY THE UNIVERSITY 



June, 1895 



PRICE 40 CENTS 



