436 
MR. HODGKINSON’S EXPERIMENTAL RESEARCHES 
Table II. (Continued.) 
Length. 
Diameter. 
U 
S3 « 
J? 03 
sj 
Weight. 
Mean 
weight. 
Breaking 
weight. 
fcc . 
8-g § 
^ a> OJ 
£ * 
Ratio 
T : C. 
Remarks. 
inches. 
20-1666 
20-1666 
inch. 
•51 
•51 j 
inch. 
•51 
lbs. oz. 
1 H 
1 
lbs. oz. 
i H 
lbs. 
38301 
3830/ 
lbs. 
3830 
20-1666 
20-1666 
20-1666 
•78 ' 
•78 
•77 _ 
•777 
2 9' 
2 8± 
2 7| ^ 
2 81 
167011 
15357 > 
14685 J 
15581 
45 : 33 
The first broke in two pieces near to the middle, and 
near to one end; and a piece was split off the 
other end, at the neutral line. The other two 
broke nearly in the same manner. For figure of 
fracture, see q, Plate XV. 
20-1666 
20-1666 
1-03 
1-015. 
1-022 
4 6 
4 5 j 
4 5| 
320071 
31601 J 
31804 
56 : 46 
54 : 49 
Broke in two places near middle; both ends cracked 
at neutral line. For figure of fracture, see o,p, 
Plate XV. 
15-125 
15-125 
15-125 
•51 " 
•51 
•51 _ 
•51 
14 " 
13| 
13L 
651 2^1 
7016 y 
6764 J 
6764 
32 : 19 
15-125 
15-125 
15-125 
15-125 
•79 1 
•77 l 
•76 f 
•78 J 
•775 
29F 
29 
28| 
29§J 
29i% 
211791 
22363 1 
19003 f 
21691 J 
21059 
15-125 
15-125 
1-00 1 
1-00 / 
1-00 
3 4 1 
3 4 j 
3 4 
39112/ 
41388 / 
40250 
For form of fracture, see r, s, Plate XV. 
12-1 
12-1 
12-1 
•50 " 
•50 
•50 _ 
•50 
ioF| 
10 
10 J 
101 
72791 
6943 y 
7363 J 
7195 
3 : 2 
3 : 2 
3 : 2 
12-1 
12-1 
12-1 
12-1 
•78 " 
•79 
•79 
•78 
•785 
! 
I 3J 
i 7| 
253551 
24043 1 
23875 f 
23875 J 
24287 
39 : 39 
1 : 1 
1 : 1 
10-083 
10-083 
10-083 
•50 - 
•50 
•50 J 
•50 
8|J 
81 
82871 
8623 V 
9883 J 
8931 
13 : 12 
13 : 12 
13 : 13 
10-0833 
10-0833 
10-0833 
10-0833 
•78 1 
•77 1 
•76 > 
•76 J 
•768 
274911 
25531 1 
25531 r 
25139 J 
25923 
1 : 1 
These generally broke in several pieces ; hut always 
in the middle by bending. There was, however, 
usually a wedge formed about the centre which 
tended to split the pillar there. 
7-5625 
7-5625 
7-5625 
•50 ~ 
•50 
•50 _ 
•50 
6*1 
6* 
6*J 
> 
% 
114791 
11143 y 
11143 J 
11255 
12 : 13 
12 : 13 
12 : 13 
7*5625 
7-5625 
7-5625 
•78 ~1 
•78 
•77 J 
•777 
14n 
14* 
> 
14A 
332251 
31601 y 
31195 J 
32007 
4 : 5 
There was a good deal of doubt respecting the neu- 
tral line ; but somewhat more than one-half was 
compressed. For fracture, see t, u, v, Plate XV. 
3-7812 
3-7812 
3-7312 
•50 " 
•50 
•50 J 
> 
•50 
177951 
17935 y 
16675 J 
17468 
20 : 30 
These broke in the middle by bending as before, 
but they generally showed a short ridge or wedge 
in the centre, as mentioned above. 
2 
2 
•52 I 
•52 j 
•52 
23035 1 
22699/ 
22867 
The first bent and slid off in A B. The 
other bent and cracked half across in 
the middle. 
n 
lT 
1 
1 
1 
•52 " 
•52 
•52 J 
> 
•52 
239631 
24747 > 
25139 J 
24616 
Broke by wedge, about three quarters of 
an inch high, sliding off in the direc- 
tion A B. B 
