TESTS OP ROAD-BUILDING ROCK ifr 1916. 



17 



Table II. — Results of compression tests of rock complete to January 1, 1917. 



ARKANSAS. 



Serial 

 No. 



Locality. 



County. 



Name. 



Crushing 

 strength, 

 pounds 



per 

 square 

 inch. 



9828 









21,980 



6331 



Bald Knob 



White 





19, 860 













■CONNECTICUT. 



Oneco. 



do. 



do. 



"Windham. 



do 



do 



Biotite granite . . . 

 do 



Gneissoid granite . 



16, 635 

 23, 290 

 20, 200 



GEORGIA. 



Southeast side Kennesaw Moun- 

 tain 



Marietta, 4 miles southwest of. . . 



Austell, f mile west 



Blackwell Station, 1 mile north of 



Cobb.. 



do. 



do. 



do. 



Feldspathic gneiss 



Biotite gneiss 



Granite gneiss 



Hornblende gneiss 



18,500 

 14, 000 

 12, 890 

 17,350 



ILLINOIS. 



4422 



Embarras 



Thornton 



do 



Hillside 



Tunnell Hill 



Reevesville 



do 



Kankakee 



do 



do 



do 



do.: 



do 



do 



do 



do 



do 



Lehigh 



Kankakee 



Alton 



Brookville 



do 



Anna 



Joliet 



Coles ' 





17 300 



5509 







23,060 

 16, 880 

 15 730 



6053 



do 



do 



8711 



j do 





4660 







19, 150 



25 780 



7509 



1 do 





7510 



do 



do 



28 400 



4764 







20' 610 

 17,710 

 20,830 

 11 660 



5550 



' do 



do 



6088 



do 





6165 



do 



do 



Dolomite 



6865 



do 



13 500 



7298 



do 





25 850 



7299 



do 



do 



20^000 

 19,800 

 19,700 

 17 050 



7300 



do 



do 



.7301 



do 



do 



7302 



do 





7871 



do 





16, 700 

 11 180 



10367 



do 





4421 



Madison 





15 100 



7422 



Ogle 





18 640 



7423 



do 



do 



18 180 



5549 



: Union 





19,510 

 8,130 



9827 



| Will 











INDIANA. 



Logansport.. 

 Greensburg . 



St. Paul 



do 



Westport 



St. Paul 



Huntington . 



Mitchell 



Bedford 



do 



Greencastle . 



Osgood 



Wabash 



Cass 



Decatur 



do 



do 



do 



do 



Huntington . 

 Lawrence . . . 



do 



do 



Putnam 



Ripley 



Wabash 



Limestone 



Dolomite 



Limestone 



Dolomitic limestone . . . 



do 



Limestone 



Dolomite 



Argillaceous dolomite . 



Limestone 



do 



do 



do 



Dolomitic limestone . . . 



20, 350 

 17,960 

 18,400 

 20,510 

 20,000 

 19,800 

 25,420 

 12, 250 

 6,900 

 6,450 

 16,000 

 14, 470 

 18,790 



