576	CEMENT----SET AT DIFFERENT TEMPERATURES.
RESUME OF RESULTS ON SPECIMENS 1 MONTH AND 3 MONTHS OLD.
Brand.	Compressive strength per square inch, specimens set in air at temperature of 70° F.—	
	1 month.	3 months.
Storm King	- - Alsen	*	 Josson	 Austin			 Bonneville Improved	 Hoffman	 Norton	 Obelisk	 Means		Pounds. 4,350 2,520 3,900 3,970 724 1.140 1.140 «1,000 1,560	Pounds. «4,400 2,430 4,040 3,110 661 1,720 1,070 ־ 1,090 1,240
	2,256	2,085
« Approximate.
RESUME OF RESULTS ON SPECIMENS SET IN AIR AT 0° F. 1 MONTH, AND IN ADDITION 1 DAY AND 7 DAYS, RESPECTIVELY, AT 70° F.
Brand.	Compressive strength per square inch, specimens set in air at 0° F. 1 month, and in air at 70° F.—	
	1 day. 7 days.	
	Pounds. 1,350 383 749 986 347 229 238 411 206 341 225	Pounds. 2,340 981 1,310 2,440 1,430 735 448 903 406 659 562
		
		
		
		
		
		
		
		
		
		
		
	497	1,110