PRACTICE yill (Continued) 



Test of Strength of Bricks 



1 



First trial 



Second trial 



Average 



Check — no lime 









0.1 per cent, 0.3 g. of lime 









0.5 per cent, 1.5 g. of lime 









1.0 per cent, 3.0 g. of lime 









2.0 per cent, 6.0 g. of lime 









SJ per cent, 10.0 g. of sand 







COMPARISON OF TENACITY 



Mixture 



0.3 Gram 

 Check 



Lime 



1.5 Grams 

 Lime 



3 Grams 

 Lime 



6 Gr.^ms 10 Grams 

 Lime Sand 



1 

















2 















Average of trials 















Weight to overcome friction . . 















Tenacity ' . . . 















19 



