18 



BULLETIN 537, U. S. DEPARTMENT OF AGRICULTURE. 



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



IOWA. 



Serial 

 No. 



Locality. 



County. 



Name. 



Crushing 

 strength, 

 pounds 



per 

 square 

 inch. 



5525 









19, 950 

 14,850 



5526 







do 













KANSAS. 



KENTUCKY. 



5552 

 7688 

 5921 

 5922 



Princeton . . . 

 Cedar Bluff . 

 Limestone . . 

 Carter 



Caldwell . 



do.... 



Carter 



do.... 



Dolomitic -limestone . . . 

 Argillaceous limestone 



Limestone 



Siliceous limestone 



MAINE. 



10219 









21, 260 



7438 









18,400 



9997 



Somes Sound, Mount Desert 



Islands. 

 do 



do 





19,780 



10233 



do 



do 



19, 220 



10234 



do 



do 



do 



24,700 



10988 





do 



do 



28, 650 



10989 



do 



do 



do 



26,500 



10990 



do 



do 



do 



32,450 



8745 







do 



20, 020 



8768 





do 



do 



22,800 



8769 





do 



...do 



20, 930 



9781 





do 



do 



IS, 780 



9865 



do 



do 



...do 



17, 150 



9996 





do 



do 



17, 540 



9445 





....do 





21,220 



10249 





...do... 



.. .do 



22,500 



10250 



do... 



do 





22,330 



10366 





do 



do 



27,050 



10019 





do 



Biotite granite 



21,650 



7439 



Frankford 



Waldo 



do 



20,600 











MARYLAND. 



5611 

 4884 

 5694 

 5695 

 5006 

 5697 

 5698 

 5699 



Mount Savage Junction . 



Frederick 



Havre de Grace 



do 



do 



do 



do 



do 



Allegany. 

 Frederick. 

 Harford . . . 



do.... 



do.... 



do.... 



do.... 



do.... 



Siliceous limestone. 



Limestone 



Gneissoid granite... 



Sericite gneiss 



Gneissoid granite... 



Amphibolile 



Gneissoid granite... 

 do 



MASSACHUSETTS. 



0288 



Otis 



Berkshire 



Granite 



6891 



Rockport 



Essex 





6892 



do 



do 



do 



6893 



do 



...do 



...do 



6894 



do 



...do 



.. do 



8796 



do 



....do 



do 



<M,\U 



Gloucester 



...do 





96.50 



do 



...do 



do 



9651 



Rockport 



...do 



. .do 



9652 



do 



...do... 



do 



5671 



Westfield 



Hampden 



Altered diabase 



