396 cox. 



The results are as follows: 



Table IV. — Transverse strength. 



Source. 



No. of 

 test. 



Length. 



Breadth. 



Height. 



Weight 

 of load. 



Modulus 

 of rup- 

 ture per 

 square 

 centi- 

 meter. 







Cm. 



Cm. 



Cm. 



Kilos. 



Kilos. 



Manila, qiiarrv uuknowii 



i: 



15.24 

 15. 24 



2.72 

 2,81 



2.89 

 2.97 



15.64 

 21.54 



15.74 

 19.86 





Guadalupe quarry " 



{: 



15.24 

 15.24 



2.61 

 2.77 



2.83 

 2.84 



18.38 

 27.68 



20.10 

 28.32 







a 



15.24 



2.75 



2.75 



12.70 



13.96 





b 



15.24 



2.78 



2.85 



15.44 



15.64 





c 



1.5.24 



2.61 



2.73 



12.24 



14.38 





d 



15.24 



2.55 



2.82 



13.16 



14. ,?4 



Guadalupe ciuarrv 



Q 



15.24 

 15.24 



2. 72 



2.73 



10.43 



11.76 





f 



2.67 



2.63 



9.30 



11.51 





g 



15.24 



2.77 



2.81 



10.20 



10.66 





h 



15.24 



2.72 



2.75 



11.33 



12. 59 





i 



15.24 



2.59 



2.65 



9.62 



11.97 



Guadalupe qiiarry '' 



\ b 



1.5.24 

 15.24 



2.79 

 2.78 



2.67 

 2.85 



10.20 

 10.44 



11.72 

 10.57 





Gundalupe quarrv "^ 



i: 



15.24 

 15.24 



2.78 

 2.74 



2.88 

 2.92 



9.75 

 10.88 



9.67 

 10.65 





Baliuag quarry 



i: 



15.24 

 15.24 



2.76 

 2.74 



2.67 

 2.68 



18.10 

 17.20 



21.00 

 20.00 







a 



15.24 



2.68 



2.52 



19.96 



26.81 





b 



15.24 



2.60 



2.88 



32.66 



34.62 





c 



15.24 



2.62 



2.57 



24.95 



32.96 



Majavjay. Laguna quarry 



d 

 e 



15.24 

 15.24 



2.63 

 2.53 



2.57 

 2.84 



20.43 

 19.96 



26.89 

 22.36 







f 



15.24 



2.76 



2.82 



32. 00 



33.33 





g 



15.24 



2.82 



2.86 



21.77 



21.58 





h 



15.24 



2.67 



2.72 



27.90 



32.29 





a 



15.24 



2.61 



2.68 



20.87 



25.45 





b 



15.24 



2.62 



2.83 



13.17 



14.35 



Majavjay, quarrv unknown 'i 



c 

 • d 



15.24 

 15.24 



2.63 

 2.77 



2.83 

 2.70 



13.62 

 24.06 



14.78 

 27.24 







e 



15.24 



2. 66 



2.73 



26.34 



30.37 





f 



15.24 



2.68 



2.77 



24.06 



26.75 





- S 



15.24 



2.47 



2.78 



20.43 



24.47 



'^ An unused block taken from a pile on the bank of the Pasig River. It had been 

 quarried some time. 



»> Kept in a tightly stoppered bottle so as to retain quarry moisture, dried immediately 

 at 100° when opened. 



^ Kept in a tightly stoppered bottle so as to retain quarry moisture. Not opened until 

 ready to break. It was broken moist with quarry water. 



'^ An old stone which had been used many years in a building. It showed marked signs 

 of decay. 



