ABRASION OF THE SURFACES OF SOLIDS. 
159 
Table VIII. - 
A Table showing the Power required to move a Weight progressively increased 
until the metals abrade each other. 
Weight to be 
moved. 
Weight re- 
quired to 
move it. 
Proportion. 
Weight to 1 
inch of area. 
Weight to be 
moved. 
Weight re- 
quired to 
move it. 
Proportion. 
Weight to 1 
inch of area. 
Wrought Iron on Wrought Iron. 
Area 6 inches. 
Wrought Iron on Cast Iron. 
Area 6 inches. 
CWt. 
CWt. 
qrs. 
CWt. 
CWt. 
CWt. 
qrs. 
CWt. 
10 
2 
2 
4.00 
1.66 
10 
2 
3 
3.63 
1.66 
12 
3 
1 
3.69 
2.00 
12 
3 
2 
3.42 
2.00 
14 
4 
0 
3.50 
2.33 
14 
4 
2 
3.11 
2.33 
16 
4 
3 
3.36 
2.66 
16 
5 
1 
3.04 
2.66 
18 
5 
2.5 
3.20 
3.00 
18 
6 
0 
3.00 
3.00 
20 
7 
0 
2.85 
3.33 
20 
7 
0 
2.85 
3.33 
22 
8 
1 
2.66 
3.66 
22 
7 
3 
2.83 
3.66 
24 
9 
0 
2.66 
4.00 
24 
8 
3 
2.74 
4.00 
26 
10 
1 
2.53 
4.33 
26 
9 
2 
2.73 
4.33 
28 
11 
1 
2.48 
4.66 
28 
10 
1 
2.73 
4.66 
30 
12 
1 
2.44 
5.00 
30 
11 
0 
2.72 
5.00 
32 
11 
3 
2.72 
5.33 
34 
12 
2 
2.72 
5.66 
36 
13 
2 
2.66 
6.00 
38 
16 
2 
2.30 
6.33 
Steel on Cast Iron. 
Brass on Cast Iron. 
Area 6 
inches. 
Area 6 
inches. 
CWt. 
CWt. 
qrs. 
CWt. 
CWt. 
CWt. 
qrs. lbs. 
CWt. 
10 
3 
0 
3.33 
1.66 
10 
2 
1 00 
4.44 
1.66 
12 
4 
0 
3.00 
2.00 
12 
2 
2 14 
4.57 
2.00 
14 
4 
3 
2.94 
2.33 
14 
3 
0 00 
4.66 
2.33 
16 
5 
2 
2.90 
2.66 
16 
3 
1 14 
4.74 
2.66 
18 
6 
1 
2.88 
3.00 
18 
3 
3 14 
4.64 
3.00 
20 
7 
0 
2.85 
3.33 
20 
4 
0 14 
4.84 
3.33 
22 
7 
3 
2.83 
3.66 
22 
4 
2 00 
4.88 
3.66 
24 
8 
2 
2.82 
4.00 
24 
5 
0 00 
4.80 
4.00 
26 
9 
1 
2.81 
4.33 
26 
5 
3 00 
4.52 
4.33 
28 
10 
0 
2.80 
4.66 
28 
6 
1 00 
4.48 
4.66 
30 
10 
3 
2.79 
5.00 
30 
7 
0 00 
4.28 
5.00 
32 
11 
2 
2.78 
5.33 
32 
7 
2 00 
4.26 
5.33 
34 
12 
2 
2.72 
5.66 
34 
8 
0 00 
4.25 
5.66 
36 
14 
2 
2.48 
6.00 
36 
8 
1 14 
4.29 
6.00 
38 
8 
3 14 
4.28 
6.33 
40 
9 
1 14 
4.26 
6.66 
42 
9 
3 00 
4.30 
7.00 
44 
12 
0 00 
3.66 
7-33 
