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. 
8804 
Albert 
Bedford 
13,820 
13 150 
679G 
(!)...„ 
4900A 
Broad Run 
Fauquier 
28,400 
28 000 
4900B 
do.... 
do 
5923 
Strathmore 
Fluvanna 
13,210 
45, 690 
13,550 
20,300 
16, 500 
17,780 
36, 900 
21, 450 
40, 850 
17 600 
5678 
Eggleston (near) 
Giles 
5924 
6615 
Koran Station 
Greenway 
5925 
Nelson 
5492 
Prince William 
Rockbridge 
• 5920 
Greenlee 
5382 
Bluff Water Station.. . 
do 
5385 
do 
do 
5375 
St. Paul 
...do 
7217 
Burkes Garden 
Tazewell 
21,500 
Exact locality not known. 
WEST VIRGINIA. 
5365 
Berkeley 
Berkeley 
23,350 
21 300 
5917 
5918 
do 
17, 450 
13,550 
34, 400 
15, 050 
12, 400 
5919 
do 
do 
7475 
Green Spring (east of) . 
do 
Hampshire 
7476 
do 
6109 
Spring Hill 
Sandstone 
9132 
do 
5,420 
5,720 
6,080 
9133 
do 
do 
do 
9134 
do 
do... 
do 
5610 
22, 440 
17,910 
5612 
do 
do 
Limestone 
5613 
do. 
do 
14,300 
29,840 
5614 
do 
do 
5615 
do 
do 
19, 650 
24,850 
5616 
do 
do 
8447 
Wood 
11,910 
WISCONSIN. 
5523 
3448 
8656 
Pebbles, 
Amberg 
Lannon 
Fond du Lac 
Marinette 
Waukesha... 
Dolomite 
Biotitc granite 
Dolomite 
32, 600 
20, 000 
23, 020 
Table III. — Geographical distribution of rock samples tested to Jan. 1, 1918. 
Alabama 32 
Arizona 4 
Arkansas 20 
California 103 
Colorado 28 
Connecticut 56 
Delaware 31 
Florida 13 
Georgia 272 
Idaho 10 
Illinois 134 
Indiana 185 
Iowa 25 
Kansas 33 
Kentucky 47 
Louisiana 8 
Maine 103 
Maryland 126 
Massachusetts 220 
Michigan 97 
Minnesota 21 
Mississippi 14 
Missouri 43 
Montana 4 
Nebraska 12 
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 
