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THE POPULAR SCIENCE MONTHLY 



cophagus - looking block, 10 feet long, tapering from 7 feet 10 

 inclies in width at one end to 5 feet 10 inches at the other, with 

 an average thickness of 5 feet, and an approximative weight of 

 about (>0 tons (see Fig. 3). 



The peculiarities of this block, which invest it with unusual 



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Fig. 3. 



interest, are : First, its apparent artificiality ; second, the surface 

 on which it rests is so narrow, smooth, and rounded, that, were it 

 not for the blocking of a flat slab of rock (shown in Fig. 4), ap- 

 parently artificially inserted underneath in exactly the proper 



Fig. 4. 



