28 



BULLETIN 670, U. S. DEPARTMENT OF AGRICULTURE. 



Table II. — Results of compression tests of rock, made prior to Jan. 1, 1916 — Continued. 



VIRGINIA. 



Serial 

 No. 



Locality. 



County. 



Name. 



Crushing 



strength, 



pounds per 



square inch. 



SVII 



Albert 



Bedford 





13,820 



6796 



(i) 







13 150 



4900A 









28 400 



4900B 



do 







28,000 



5923 









13 210 



5678 



Eggleston (near) 



Giles 





45, 690 



5924 







13, 550 



6615 



Koran Station 







20 300 



5925 







16,500 



5492 





Prince William 





17, 780 



5920 







36,900 



5382 



Blu.fi Water Station. . . 

 do 







21,450 



5385 



do 



do 



40, 850 





St. Paul 





...do... 



17, 600 



7217 



Burkes Garden 







21,500 











Exact locality not known. 

 WEST VIRGINIA. 



5365 

 5917 

 5918 

 5919 

 7475 

 7476 

 6109 

 9132 

 9133 

 9134 

 5610 

 5612 

 5613 

 5614 

 5615 

 5616 

 8447 



Berkeley 



Renick." 



Frazier 



Snow Flace 



Green Spring (east of). 



do 



Spring Hill 



Fairmont 



do 



do 



Sturgisson , 



do , 



do 



do 



do 



do 



Parkersburg 



Berkeley 



Greenbrier. . 



do 



do 



Hampshire.. 



do 



Kanawha . . . 



Marion 



do 



do 



Monongalia . 



do 



do 



do 



do 



do 



Wood 



Limestone 



Crystalline limestone. .. 



Limestone 



do 



Siliceous limestone 



Quartzite 



Sandstone 



do 



do 



do 



Siliceous limestone 



Limestone 



Argillaceous limestone. 

 Calcareous sandstone. . . 



Impure limestone 



Argillaceous limestone. 

 Feldspathic sandstone. 



23,350 

 21,300 

 17, 450 

 13, 550 

 34, 400 

 15, 050 

 12, 400 

 5,420 

 5,720 

 6,080 

 22, M0 

 17,910 

 14,300 

 29,840 

 19, 650 

 24,850 

 11,910 



WISCONSIN. 



5523 







32, 600 



3448 







20, 000 



8656 







23,020 











Table III. — Geographical distribution of rock samples tested to Jan. 1, 1918. 



Alabama 



32 



Kansas 



33 



Arizona 



4 



Kentucky 



47 



Arkansas 



20 





8 



California 



.. 103 



Maine 



103 



Colorado 



28 



Maryland 



126 



Connecticut 



56 



Massachusetts .... 



220 



Delaware 



31 



Michigan 



....97 



Florida 



13 



Minnesota 



21 



Georgia 



.. 272 



Mississippi 



14 



Idaho 



10 



Missouri 



43 



Illinois 



.. 134 



Montana 



4 





185 

 25 





12 



Iowa 



New Hampshire.. 



34 



New Jersey 82 



New Mexico 1 



New York 155 



North Carolina... 162 



Ohio 173 



Oklahoma 52 



Oregon 14 



Pennsylvania 625 



Rhode" Island 43 



South Carolina 33 



South Dakota .... 15 



Tennessee 85 



Texas 69 



Utah 13 



Vermont 55 



Virginia 439 



Washington 213 



West Virginia 193 



Wisconsin 154 



Wyoming 3 



Canada 55 



Cuba 4 



Porto Rico 12 



Total 4,325 



