78 POPULAR SCIENCE MONTHLY. 



of all, had been discovered at Kolil-ville, in the same State, in 

 1883, and was still in the possession of the family on whose prop- 

 erty it had been found. 



As these stones were found in the deposits of " drift '' which 

 were left by the ice of the Glacial period, it was clear that they 

 had been brought to their resting places by the ice itself. The 



Three View.s ok the Saukvillp; Diamond (six carats); enlarfred about three diameters. 



(Owned by Bunde and Upmeyer, Milwaukee.) 

 We are indebted to the courtesy of Bunde and Upmeyer, of Milwaukee, for the illustra- 

 tions showing the Burlington and Saukville diamonds. 



map reveals the additional fact, and one of the greatest signifi- 

 cance, that all these diamonds were found in the so-called " kettle 

 moraine." This moraine or ridge was the dumping ground of 

 the ice for its burden of bowlders, gravel, and clay at the time of 

 its later invasion, and hence indicates the boundaries of the ter- 

 ritory over which the ice mass was then extended. In view of 

 the fact that two of the three stones found had remained in the 

 hands of the farming population, without coming to the knowledge 

 of the world, for periods of eleven and seven years respectively, it 

 seems most probable that others have been found, though not 

 identified as diamonds, and for this reason are doubtless still to be 

 found in many cases in association with other local " curios '' on 

 the clock shelves of country farmhouses in the vicinity of the 

 ''kettle moraine.-' The writer felt warranted in predicting, in 

 1894, that other diamonds would occasionally be brought to light 

 in the " kettle moraine," though the great extent of this moraine 

 left little room for hope that more than one or two would be 

 found at any one point of it. 



In the time that has since elapsed diamonds have been found 

 at the rate of about one a year, tliough not, so far as I iiiii nwavo, in 

 any case as the result of seardi. in AVisconsin lia\c been found the 

 Saukville diamond, a beautiful wliitc stone of six carats' weight, and 

 also the Burlington stone, having a weight of a little over two 

 carats. The former had been for more than sixteen years in the 

 possession of the findci' lict'ovc he learned of its value. Tn Michi- 



