148 GEOLOGY OF EASTERN WISCONSIN. 



the Cedar'burg spring, issue from various portions of the drift. It is 

 possible that a concealed connection with the rock may exist in some 

 of these; but evidence of the fact is wanting. Telulah Mineral 

 Springs, near Appleton, flow from the drift a few feet from the sur- 

 face of rock belonging to the Galena horizon, and from the fact that 

 water of similar character flows from a drilling in the rock in the im- 

 mediate vicinity, it is claimed that the flow is from that source. 



The following classified list of springs, though far from being ex- 

 haustive, may be serviceable. 



Sulphur Springs. In all these the sulphur exists in the condition 

 of sulphuretted hydrogen, which, being volatile, soon escapes into the 

 atmosphere, and so unless the chemical determination be made at the 

 spring, or special precautions taken, it fails to appear in the analysis. 

 This is the case with Richmond's spring near Whitewater, which is 

 very strongly impregnated with this gas, no indication of which ap- 

 pears in the analysis. 



The sulphur is derived without doubt in most cases from the de- 

 composition of iron pyrites, specimens of which in the state of 

 decomposition are occasionally to be found. 



PLACE. OWNER. SOURCE. 



Whitewater, Sec. 1, near center A. M. Richmond Drift. 



Whitewater, Sec. 1, N. W. qr. of S. E. qr H. J. Starin Drift. 



La Grange, Sec. 9, N. W. qr. of S. W. qr P. Oleson Drift. 



La Grange, Sec. 36, N. W. qr D. Williams Drift. 



Appleton, below city J. E. Harriman Drift. 



Chalybeate Springs. These are characterized by the presence of 

 iron compounds, usually derived from the decomposition of iron 

 pyrites, and so are closely allied to the preceding. 



LOCATION AND CHARACTER. 



Ahnapee, T. 25, R. 28 E. Sec., N. W. qr. Temperature 45 (August 19), flow 



moderate but brisk; little sulphur, much iron, taste pleasant. 

 Byron, Sec. 16, S. E. qr., large but not very strongly impregnated. 

 Empire, Sec 18, N. E. corner, small. 



Herman, Sec. 29, N. E. qr., small, but strongly impregnated. 

 Hortonia, on Mr. Briggs' place, Sec. 18, two small springs strongly charged. 

 Lake Mills, Sec. 1, N. hf., contains also a little sulphuretted hydrogen. 

 Grand Chute, Sec. 31, S. W. qr., rather small, much iron. 

 Whitewater, Sec. 1, S. E. qr., limited flow, much iron. 

 Whitewater Village, small, but strongly impregnated. 



Travertine Springs. These contain an excess of bicarbonate of 

 lime and magnesia held in solution by the presence of free carbonic 

 acid in the water, which on escaping into the atmosphere causes a 



