34 
The America}) Geologist. 
July, 1894 
tells me that after it came into his handshegave considerable 
attention to the properties of gems. 
Diamonds have then been found at four widely separated 
localities in the state of Wisconsin, namely: at Eagle in 
Waukesha county, at Kollsville in Washington county, at 
Oregon in Dane county, and on Plum creek in Pierce county. 
In the last mentioned locality the stones were found in the 
bed of a stream within the area of the older drift, perhaps 
twenty miles from the Kettle moraine. The other localities 
are on the Kettle moraine of the Green bay lobe of the ice- 
sheet, as may be seen b} r reference to figure 1. Supposing 
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m>. 
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Fig. 1. Map of Wisconsin showing localities where diamonds have been found. The 
location of the Kettle moraine and the margin of the older drift are based on Cham- 
berlin's maps. The directions of the glaciai stria- are taken from the same source. 
that the diamonds which have been found in the Kettle mo- 
raine have a common source, as is probable, they must have 
been derived from some area in the northeastern portion of 
