450 
MR. HODGKINSON’S EXPERIMENTAL RESEARCHES 
Table XI. (Continued.) 
No. of Expe- 
riment. 
Description of pillar (all being cast from the same iron 
as before). 
Deflection. 
Weight 
producing 
the de- 
flection. 
Breaking 
weight. 
Remarks. 
8. 
Solid uniform cylinder, differing from the last 
only in the ends being formed so that the strain 
passed in a line further from the centre, or -gth 
of the diameter from one side. 
Diameter of cylinder 1 - 9G inch. 
Length of pillar 60'5 inches. 
Weight of pillar 46 lbs. 5 ozs. 
inch. 
•36 
•47 
•54 
•79 
•92 
1-15 
1-38 
1-48 
lbs. 
7341 
8685 
9893 
11169 
11953 
12737 
13521 
14305 
lbs. 
14697 
The deflections of this pillar were for a length 
4 ft. 8} inches, as in the last case. 
9. 
Solid uniform cylinder fixed so that the press- 
ure passed diagonally through the opposite 
corners. 
Diameter of pillar '97 inch. 
Length of pillar 30 - 25 inches. 
Weight of pillar 5 lbs. 13 ozs. 
Plate XV. No. 5, A. 
5750 
10. 
Cylinder, same as the last, and broke in the 
same manner. 
Length of pillar 30} inches. 
Diameter of pillar 1'02 inch. 
Weight of pillar 6 4} ozs. 
7275 
Taking a mean from these two experiments, we 
have a cylinder, diameter - 995 inch, length 30} 
inches, weighing 6 lbs. | oz., broke with 6512 
lbs. 
