594	CEMENT---SET AT ORDINARY TEMPERATURES.
Compression tests of cements—Continued.
		Composition.			Time of setting in—		Dimensions.			Sec- tional area.	Ultimate stren		jth. 1	
Marks.	Brand of cement.	Ce- ment.	Sand.	Water.	Air.	Water.	Height.	Compressed surface.			Total.	Per square inch.	Mean.	Remarks.
		Neat.		Per cent. 38.0	Days.	Days. 13	Inches.	Inches. 2.06	Inches. 2.01	Sq. inches. 4.14	Pounds. 1,870	Pounds. 452 435	Pounds.	
P. H.C., Apr. 4 .														
							2.01	2.00	2.07	4.14	1,800			
							2.01	2.00	2.06	4.12	1,950	473		
							2.01	2.01	2.08	4.18	1,780	426		
							1.98	2.00	2.06	4.12	1,830	444	446	
		Neat.		38.0		30	1.99	2.08	2.02	4.20	3,310	788		
														
							2.00	2.07	2.01	4.16	3,720	894		
							2.02	2.02	2.08	4.20	3,210	764		
							2.01	2.06	2.02	4.16	3,200	769		
							2.02	2.02	2.07	4.18	3,410	816	806	
	Akron Star		Neat.		35.2		0	2.00 1.99 2.00	2.02 2.00 2.02	2.01 2.02 2.02	4.06 4.04	4,460 3,810 4,150	1,100 943		
Ak															
										4.08		1,020		
							2.00	2; 04	2.00	4.08	3,700	907		
							2.00	2.00	2.02	4.04	3,300	817	957	
		Neat.		35.2		0	1.98	״ nn	2.00	4.00	6,500	1,630		
														
							1.98	1.99	2.01	4.00	6,670	1,670		
							1.98	1.98	1.98	3.92	7.850	2,000		
							1.98	2.00	2.00	4.00	7.180	1,800		•
							1.99	1.96	1.99	3.90	7,000	1,800	1,780	
		1		40.6		0	2.00 2.00	2 01	2.01 2.01 2.05 2.05	4.04 4.10 4.08 4.08	3,740 3,090 3,810 3,490	926 754 934 855		
Ak. lxl		Akron Star			1					2.04 1.99 1.99						
							2.00 2.01							
							2.00	2.04	2.01	4.10	3,400	829	860	
		1		40.6	30	0	2.01 2.01 2.02	2 02	2.00 1.99 2.00	4.04 4.14 4.00	5,650 5,110 4,600	1,400 1,230 1,150		
			1					2.08 2.00						
							2.00 2.00	1.98 1.98	2.04 2.04	4.04 4.04	5,200 5,210	1.290 1.290	1,272	
				52.5		0	2.03 2.06		2.05 2.03	4.18 4.10 4.16 4.28 4.10	2,130 1,820 2,010 1,430 1,790	510 444		
Ak. 1x2		! Akron Star		1	. 2											
												483 334 437		
							2.02 2.02 2,03	2.04 2.02 1 2.03	2.04 2.12 2.02					
	1												442	!