367
INTERNAL STRAINS IN TREATED TUBE.
DIAMETRICAL STRAINS RELEASED AND THEIR CORRESPONDING STRESSES.
Micrometer readjusted since taking earlier measurements.
No. of diameter.	Micrometer readings, diameters.						Strains released.	Stresses corre- sponding, compres- sion.
	Walls of full thickness.			Walls 165.״ thick.				
	A.	B.	Mean.	A.	B.	Mean.		
	Inch.	Inch.	Inch.	Inch.	Inch.	Inch.	Inch.	Pounds.
18		.0446	.0460	.0453	.0475	.0486	.04805	. 00275	16,200
19		.0460	.0439	.04495	.0504	.0480	.0492	.00425	25,100
20		.0432	.0433	. 04325	.0483	.0482	.04825	.0050	29,500
21		.0428	.0448	.0438	.0481	.0500	.04905	.00525	31,000
22		.0436	.0433	. 04345	.0490	.0486	.0488	.00535	31,600
23		.0430	.0447	.04385	.0483	.0501	. 0492	.00535	31,600
24		.0441	.0430	.04355	.0493	.0486	.04895	.0054	31,800
25		.0490	.0469	.04795	.0541	.0522	.05315	. 0052	30,600
26		.0511	.0502	.05065	.0560	.0551	. 05555	.0049	29,000
27		.0551	.0550	.05505	.0576	.0580	.0578	.00275	16,200