469
BRICKS,
The following data were furnished by the Engineer Commissioner, District of Columbia.
Bricks of the same kind and manufacture are tabulated in groups, separated from the others by an intervening space.
No. of brick.	Kind.	Method of manufacture.	Color.	Water absorbed in 24 hours by weight.
1	Paving ..	Machine; stiff mud; re-pressed; end cut...		Per cent. 13.8 13.7 14.1 13.1 14.0 10.1 11.1 9.6 14.1 10.5 11.0 10.9 7.1 8.6 9.1 11.7 8.9 11.3 5.3 5.9 6.2 0.5 0.3 0.18 13.3 10.6 7.9 9.5
2		do				
3		do				
4		do				
5				
6		do				
7		do			do			
8		do				
9		do				
10				
11		do				
12		do				
13		do			Darker than average.	
14		do				
15				
16		do —		do			
17		do —			
18		do			do			
19	Building .		Buff, with light and dark brown specks.	
20		do —		do			
21		do			do			
22		do			Drab (no speckles)...	
23		do				
24		do			do			
25				
26		do			do	 			
27		do			do			
28		do....	Machine; semidry; re-pressed			
29		do			do			
30		do —		do			6.3 8.1 7.9 8.5 11.0 10.4 10.0 7.2 5.8 6.4 9.4 6.3 6.4 10.0 9.8 10.9 13.7 9.6 7.7 7.6 8.4 9.1 8.9 8.4 11.1
31		do			do			
32		do ....			
33		do			do			
34		do		Hand; soft mud			
		do			do			
36				
37 38				
		do ....		do			
39		do ....		do			
40		do —		do			
41		do				
42		do				
43		do			With nu m e r o u s streaks and blotches.	
44				
45				
46			do	
47				
48			Darker than average.	
49				
50				
51				
52				
53				
54		do