on the strength of materials. 133 
sides of the cubes, precisely as if a wedge had operated 
between them. I have preserved a number of the specimens, 
the sides of which, if continued, might cut the cubes in the 
direction of their diagonals. 
Experiments made on the transverse strain of cast bars, the ends 
loose. June 8th, 1817. 
Weight of the Dist, of bearings lbs. 
bars. lbs. oz. ft. avoir. 
135 Bar of 1 inch square - 
10 6 
3 
0 
897 
136 1 
Do. of 1 inch, do. 
9 8 
2 
8 
1086 
137 1 
. half the above bar 
- 
X 
4 
2320 
1 qR 
fBar of 1 inch square. 
t O° i 
< 
; through the diagonal 
2 8 
2 
8 
851 
139 
[_Ha!f the above bar 
- 
1 
4 
1587 
1 4 ° | 
' Bar of 2 in. deep, by \ inch thick 9 5 
2 
8 
2185 
141 1 
Half the above bar 
- 
1 
4 
4508 
142 J 
r Bar 3 in. deep, by a inch thick 
9 a 5 
2 
8 
3588 
143 1 
.Half the bar 
- 
1 
4 
6854 
144 Bar 4 inches, by ~ inch thick - 
9 7 
2 
8 
3979 
345 Equilateral triangles with the ar 
igle up and 
down. 
146 
"Edge or angle up 
9 aa 
2 
8 
a 437 
147 
— angle down 
9 7 
2 
8 
840 
148 
i Half the first bar 
- 
X 
4 
3059 
a 49 
[_Half the second bar 
- 
X 
4 
x 656 
150 A feather-edged or A bar was cast whose dimensions were 
151 f 2 inches deep by 2 wide 10 o edge up 2 8 3105 
152 iHalf of ditto 
N. B. All these bars contained the same area, though dif- 
ferently distributed as to their forms. 
