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THE POPULAR SCIENCE MONTHLY.
cophagus-looking block, 10 feet long, tapering from 7 feet 10 inches 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
![](http://upload.wikimedia.org/wikipedia/commons/thumb/6/62/PSM_V40_D356_Boulder_near_guilford_connecticut_1.jpg/500px-PSM_V40_D356_Boulder_near_guilford_connecticut_1.jpg)
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), apparently artificially inserted underneath in exactly the proper
![](http://upload.wikimedia.org/wikipedia/commons/thumb/2/21/PSM_V40_D356_Boulder_near_guilford_connecticut_2.jpg/500px-PSM_V40_D356_Boulder_near_guilford_connecticut_2.jpg)
Fig. 4.