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Mineralogy and Geology. 261 
they have presented facts important for the understanding of the relations 
between the human race which inhabited the country at the period of 
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in that cavern, which seems 
nevertheless to have been perfectly adapted for habitation, being easy of 
access, spacious, well lighted, and very dry at that period, as is shown by 
the absence of stalagmites between the lehm which then covered 
floor of the cavern, and the pebbly clay which is of a date subsequent to 
ere 
sandy and argillaceous like the lehm; 1, the same, modified and mixed 
With vegetable remains; in this last bed, which forms the present floor 
of the cavern, are found some flints of the knife form and a small hatchet 
of sandstone, polished and irregular in surface. : 
The third eavern, called the cave of the Nutons of Gendron, is situa- 
ted two thousand five hundred meters {in a straight line) above the cay- 
erns of Furfooz, on the left bank of the Lesse; but as the river describes 
humerous curves between the two localities, the real distance is more 
than eight kilometers, This cavern is at an elevation of about seventy 
Am. Jour. Sct.—Szconp Sextus, Vou. XLIII, No. 128.—Mancu, 1867. 
34 
