856 
ME. HODGKIXSON’S EXPEEIilEXTAL EE.SEAECHE.S 
Abstract from Tables VIII., IX., XII., XIII., «&c. of the former Eesearcb on the 
results obtained from two hollow 
Hollow columns of 
Low Moor iron, < 
No. 3. 
Hollow columns of 
I.ow Moor iron, 
No. 2. 
^Wrought ^ 
iron. 
Solid ! 
pillars. 
Timber. 
Pillars with rounded ends. 
Pillars 
Length of pillar. 
7 ft. 6J in., 
or 90f in. 
90f in. 
90f in. 
90f in. 
10 ft. 2 in., 
or 122 in., in- 
cluding caps on 
the ends. 
122 in., 
including caps 
on the ends. 
90| in. 
60^ in. 
60i ir 
Diameter of section. 
Number of 
External diameter 
1*78 in. 
Internal diameter 
1-21 in. 
External diameter 
1-74 in. 
Internal diameter 
M87 in. 
External diameter 
2'01 in. 
Internal diameter 
1*415 in. 
External diameter 
2*23 in. 
Internal diameter 
1*54 in. 
External diameter 
3*555 in. 
Internal diameter 
2*693 in. 
External diameter 
3*532 in. 
Internal diameter 
2*659 in. 
Diameter 1*017 in. 
Diameter 1*015 in. 
Side of square 
1*75 in. 
^ i Breaking weight, 
deduced ° ° 
from. 
Length of 
pillar. 
5585 
7 ft. 4J in. 
or 88^ in. 
5711 
8357 
12389 
42331 lbs., 
or 43537 lbs. for 
10 ft. or 120 in. 
44683 lbs., 
or 45956 lbs. for 
10 ft. or 120 in. 
1808 
3938 
3197 
The second pillar 
was capped with 
iron at the ends, 
to prevent their 
being crushed. 
884 in. 
884 in. 
88J in. 
120 in. 
120 in. 
601^ in. 
I 
I 1 
