592	CEMENT---SET AT ORDINARY TEMPERATURES.
Compression tests of cements—Continued.
Dimensions.			Sec- tional area.	Ultimate strength.			
Height.	Compressed surface.			Total.	Per square inch.	Mean.	Remarks.
Inches. 2.02	Inches. 1.98	Inches. 2.10	Sq. inches. 4.16	Pounds. 2,550 2,600 2,400 2,480 2,570	Pounds. 613	Pounds.	
2.01	2.00	2.06	4.12		631		
2.01	2.01	2.08	4.18				
1.99	2.04	2. 01	4.10		605		
2.00	2.02	2.05	4.14		621	609	
2.00	1.99	2.07	4.12	3,940 3,790 3,200	956		
2.00	2.00	2.08	4.16		911		
2.00	2.04	2.05	4.18		766	878	
2.02	2.00	2.06	4.12	1,360 1,980	330		
2.02	2.04	2.00	4.08		485		
2.00	2.05	2.02	4.14	M60 1,600 1,710 1,680 1,590 2,170	353		
2.00	2.04	2.00	4.08		392		Sifted material. Grains finer than ".0027 diameter.
2.00	2.10	2.03	4.26		401		
2.00	2.06	2.00	4.12		408		
2.06	1.98	2.07	4.10		388		
2.04	2.06	2.03	4.18		519	410	
2.02	2.02	2.04	4.12	1,150	279		1 Sifted material. Grains coarser j than ".0058 diameter.
2.00	2.08	2.09	4.35	1,100 1,540	253		
2.02	2. 07	2.07	4.28		360	297	
1.98	2.12	1.96	4.16	1,600 1,250 1,500 1,270	385		1 Corner gone. [Sifted material. Grains of ce-j ment finer than ".0027 diam-J eter.
1.96	1.99	2.10	4.22		296		
2.00	2.10	2.01	4.22		355		
■ 2.00	2.10	1.97	4.14		307	336	
1.96	2.05	2.01	4.12	1,400	340		
1.96	2.04	1.99	4.06	i;500 1.390 1,550 1.390 1,380	369		
1.96	1.98	2.03	4.02		346		
1.97	2.03	2.00	4.06		382		
1.96	2.02	1.98	4.00		348		Sifted material. Grains of ce-• ment finer than ".0027 diameter.
1.96	2.03	1.98	4.02		343		
1.96	2.02	1.98	4.00	1,450	362		
2.00	2.04	2.08	4.24	1,100 1,100 1,350	259		
2.00	2. 04	2.04	4.16		267		
1.98	2.05	1.95	4.00		338	335	
Composition.			Time of setting in—	
Ce- ment.	Sand.	Water.	Air.	Water.
Neat.		Per cent. 37.5	Dcii/s. 14	Days. 0
				
				
				
				
Neat.		37.5	30	0
				
				
Neat.		42.8	31	0
				
				
				
				
				
				
				
Neat.		46.1	31	0
				
				
1	1	43.7	30	0
				
				
1	1	45.6	31	0
				
				
				
				
				
				
				
				
Brand of cement.
Norton........
Norton. .
Norton.......
Marks.
N., Mar. 25.
N., F. 27.....
N., Mar. 2....
N.,lxl, Mar.3.
N.,lxlf F.27 ..