238 MB. W. FAIEBAIEN AOT ME. T. TATE ON im MECBANICAX PEOPESHES 
Experiment 19. 
Cylinder T. Diameter 4-05 inches. 
Length 7-0 inches. 
In parts of an incli. 
'0-079- 
0-081 
0-090 
Thicknesses measured 0-086 
0-086 
0-079 
.0-086 
')> Minimum — 0 - 0 7 9 inch. 
This cylinder remained unbroken after sustaining a pressure of 500 lbs. per square inch. 
Experiment 20*. 
Cylinder V. Diameter 4-2 mches. 
Length 22 inches. 
In parts of an inch.. 
fO-063-^ 
Thicknesses measured < 
> Minimum =0-055 inch. 
0-056 
0-057 
0-055 
0-057 
0-055 
^0-056- 
Collapsed with 120 lbs. per square inch. 
Experiment 21*. 
Cylinder W. Diameter 4-1 inches. 
Length 21-5 inches. 
In parts of an inch. 
'0-0535- 
0-051 
0-055 
Thicknesses measm-ed < 
>■ Minimum =0-051 inch . 
0-052 
0-053 
0-060 
0-057 
0-0525 
LO-055 - 
Collapsed with 129 lbs. pressure per squai-e inch. 
. 1 a with an asterisk were not originaUy included in the calculations, t 
results are strictly in conformity with those previously reduced. 
the 
