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Gillmore, Q. A., Lieut. Col. Corps of Engineers, bot. maj. gen. U. S. A. '\8 Report on the compressive Strength, specific gravity, and 
" ratio of absorption of various kinds of building-stone from 

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different sections the United States, tested at fort Tompkins, Staten 
Island, N. Y. (Engineer department, U. S. A.) (Mit 1 Taf.) 

8. Washington 187'.