218 ME. W. EAIEBAIEN AOT> ME. T. TATE ON THE ISIECHANICAL PEOPEETIEb 
Flint-glass Cylinders. 
Experiment 1. 
Diameter . . . • O'SSincli. 
0-5674 square incli 
Height 1-0 inch. ^ 
Placed between india-rubber packings. 
This specimen having been slightly fractured at an early stage in the experiment, it 
was taken out and the fractured side ground flat preparatory to another tria . 
Weiglits added, 
in lbs. 
1321 
2080 
896 
896 
896 
896 
896 
448 
448 
448 
224 
224 
224 
224 
224 
Experiment 2. 
The same specimen as in Experiment 1. 
Diameter mcb. 
Height of segment {ah) 0-73 inch. 
Area 0-555 inch. 
Height of specimen I'® 
"Weigbls added, 
in lbs. 
224 
224 
Pig. 4. 
Total weigb-c, 
in lbs. 
1321 
3401 
4297 
5193 
6089 
6985 
7881 
8329 
8777 
9225 
9449 
9673 
9897 
10121 
10345 
Fractured 
224 
224 
224 
224 
224 
224 
224 
224 
112 
112 
112 
112 
Total weight, 
in lbs. 
10569 
10793 
11017 
11241 
11465 
11689 
11913 
12137 
12361 
12585 
12697 
12809 
12921 
13033 
Crushed 
Fractured with 9,225 lbs. = 16,621 lbs. per square mch. 
Crushed with 13,033 lbs.=23,483 lbs. per square inch. 
It will not be necessary again to repeat in detail the steps by whmh the weights ueit 
augmented, as these were similar in every case. In the succeedmg experiments 
weights at which the specimens fractured and crushed are alone given. 
