CHEMICAL AND PHYSICAL PAPERS. 



97 



Table I.— Transverse tests of Kansas vitrified paving brick; testing laboratory, 

 University of Kansas. 



Lab. 

 No. 



Location and brand. 



No. 

 tested. 



Average size 

 of cross- 

 section. 



Average 

 load at 

 rupture. 



26 

 27 



9 

 10 



7 



8 

 19 

 20 

 21 

 llA 



llB 



12 

 13 

 14 



15 

 16 

 17 

 18 

 22 

 23 

 24 

 25 

 29 

 30 

 28 



6 



1 



2 



3 



4 



5 



Lawrence, first kiln 



" second kiln 



Coffeyville, May, '97 , 



" January, 'GO 



Pittsburg 



Topeka, "Capital City" 



" No. 2 [y.'.".'.'.'.'.'.'.'. 



Leavenworth 



" "O," pure shale 



' ' shale and rivor sand. 



" soft burned 



" hard burned 



" finegrained 



" coarsegrained 



" beveled edges 



Osage City, No. 1, May, '97 



No. 2, May, '97 



No. 3, May, '97 



Atchison, May, '97 



lola, light color 



" dark red 



Neodesha 



Galesburg, 111 



Des Moines, Iowa, "Capital City" 



" "T" 



" "Flint Co."... 

 " '' "Iowa" 



2.39x3.83 

 2.38x3.81 

 2.28x4.07 

 2.28x4.07 

 2.38x3.79 

 2.45x3.72 

 2.32x3.70 

 2.20x3.63 

 2.34x3.88 

 2.56x3.72 

 2.70x4.17 

 2.72x4.10 

 2.52x3.86 

 2.69x3.99 

 2.48x3.67 

 2.51x3.77 

 2.48x3.69 

 2.43x3.55 

 2.12x3.54 

 2.15x3.61 

 2.30x3.87 

 2.24x3.81 

 2.36x3,83 

 2.36x3.70 

 2.38x3.82 

 2.57x3.82 

 2.50x3.75 

 2 56x3.76 

 2.45x3.90 

 2. .54x3.83 

 2.60x3.94 



12,516 



8,128 

 9,244 

 11,185 

 8,974 

 10,153 

 8,450 

 8,069 

 6,802 

 9,432 

 10, (-32 

 10,919 

 10.677 

 7,890 

 8,940 

 9,253 

 9,165 

 7,590 

 8,100 

 4,692 

 3,820 

 7,950 

 6,220 

 7.900 

 7,747 

 9,600 

 13,700 

 12.334 

 12,001 

 10,702 

 13,, 580 



3,220 

 2,106 

 2,201 

 2,649 

 2,360 

 2,696 

 2,684 

 2,680 

 1,749 

 2,207 

 1,928 

 2,143 

 2,548 

 1,6.56 

 2,409 

 2,324 

 2,443 

 2,331 

 2,71% 

 1,567 

 l.Wi. 

 2,179 

 1,633 

 2,233 

 2,007 

 2,311 

 3,525 

 3,i;i9 

 2,929 

 2,6N6 

 3,(38 



Table II.— Crushing tests of Kansas vitrified paving brick; testing laboratory, University of 



Kansas. [Haif-brick used.] 



Lab. 

 No. 



Location and brand. 



Number 

 tested. 



Average load 

 at crushing. 



Crushing load 

 per sq. inch. 



26.. 

 27.. 



9.. 

 10.. 



7.. 



8.. 

 19.. 

 21 . 

 11 A 

 11 B 



12.. 

 13.. 

 14 . 



15.. 

 16.. 

 17.. 

 18.. 

 22.. 

 23.. 

 25.. 

 20.. 

 29.. 

 30.. 

 28.. 



6.. 



1.. 



2.. 



3.. 



4 . 



5 . 



Lawrence, fitst kiln 



" second kiln 



Coffeyville 



Pittsburg 



Topeka, " Capital Cityi"' No.' V. '. '. '. 

 No.2... 



Leavenworth 



" "O," pure shale 



' ' shale and river sand 



" soft burned 



" hard burned 



" finegrained 



" coarsegrained 



" beveled edges 



Osage City, No. 1 



No.2 



Atchison 



Topeka, No. 1 



lola, light color 



" dark red 



Neodesha 



Galesburg, 111 



Des Moines, "Capital City" 



"T" .'.".'.; 



'■ Flint Co. ".. 



' ' " Iowa " 



87,537 

 51,457 

 79,732 

 97,429 

 94,746 

 95,722 

 95,080 

 69,680 

 57,562 

 87,046 

 62,846 

 67,548 

 79,680 

 71,203 

 73,680 

 50,000 

 36,3.56 

 53,902 

 33,077 

 59,340 

 49,503 

 51,349 

 59,148 

 36,472 

 90,640 

 72,294 

 60,;592 

 70,986 

 74,442 

 58,446 



9,550 

 5,759 

 8,466 

 11,040 

 10,447 

 10,082 

 11,464 

 8,078 

 5,736 

 7,806 

 6,118 

 6,978 

 7,637 

 7,270 

 7,562 

 5,151 

 4,009 

 6,879 

 4,251 

 6,852 

 6,273 

 5,997 

 6,790 

 4,832 

 9,516 

 7,147 

 6,959 

 7,390 

 7,783 

 5,607 



