110 BULLETIN OP THE UNIVERSITY OF WISCONSIN. 



ceived attention, and the minerals in association with 

 them have been mentioned in the several reports of the 

 Wisconsin Geological Survey as well as in other publica- 

 tions. The present investigation has been devoted chiefly 

 to the crystallographical development of Wisconsin min- 

 erals, and it has shown that from a purely scientific stand- 

 point they possess considerable interest. Most of the 

 species described have been before reported from the lo- 

 calities, and some, such as the calcites and smithsonites 

 from the Galena Limestone, are quite widely distributed 

 in cabinets. A few of the occurrences are quite new. The 

 list of species considered includes with but few exceptions, 

 it is believed, all that have been reported as occurring 

 in definite megascopic crystals within the boundaries of 

 the state. 



The material on which this study has been made is chiefly 

 from the Mineral Collection of the University of Wisconsin, 

 in which is included the W. T. Henry collection, with little 

 doubt the most complete collection of minerals that has 

 been made from the mining region of southern Wisconsin. 

 The writer is under obligations to Professor Edward 

 Kremers of the University, for specimens of crystallized 

 minerals collected from the Hamilton Cement Rock at 

 Milwaukee, and to Mr. L. S. Cheney, also of the faculty of 

 the University, for specimens from the vicinity of Platte- 

 ville. 



Below is given a partial list of the papers which treat of 

 Wisconsin minerals. I have not included in this list the 

 voluminous literature by Irving, Van Hise, Pumpelly, 

 Brooks, and others, on the crystalline rocks of northern 

 Wisconsin, in which descriptions of microscopic rock con- 

 stituents are given. 



Moses Strong, Geology and Topography of the Lead 

 Region. Geology of Wisconsin, Vol. II, pp. 689-752. (1878.) 



R. D. Irving, The Mineral Resources of Wisconsin. 

 Trans. Am. Inst. Min. Eng., New York Meeting, 1880, 

 pp. 1-31. (1880.) 



