﻿CLAYS FROM LUZON. 



429 



Table VI. — Plii/sienl properties of Philippine clays. 





S3 *- 



Tensile strength 

 (pounds per 

 square inch). 



Shrinkage 



(per eenti. 









Color. 



S3 

 S 



3 

 



5 



■s o.- 



'O'S Q 



!™ *« rt 

 © O M 



sis 







To- 

 tal. 



Fusi- 

 bility. 







Air- 

 dri- 

 ed. 



Burned. 



Air. 



Fire. 



Air-dried. 



Light gray 

 White 



Burned. 



1 



Pale violet gray. 

 Very light grayish 



14 181 









1330 





31.6 



Low _ 



3.6 



4.7 



8.3 



"1720 



















white. 



3 



31.1 11 



do 



4.2 



4.4 



S.6 



'■1740 



('renin 



Rosy cream. 



4 

 5 











'■1760 

 "1680 





Creamy white. 



30.4 



Low _ 



5.2 



6.8 



12.0 



White 



6 



33.6 





do 



3.6 



4.0 



7.6 



"1050 



do 



White. 



7 



31.6 





do 



2.0 



6.0 



8.0 



'•1650 



do. .... 



Pinkish white. 



8 



27.9 



63 



....do 



4.8 . 1.9 



6.7 



'■1560 



Creamy white __ 



Creamy white. 



9 



24.9 



43 



Medium . 



3. 2 13. 6 



16.S 



"1450 



Light buff 



Pale lilac and rose. 



10 



38.6 







Low 



3.2 







'4690 



Creamy white.. 



Light cream. 



11 



31.3 

 36.0 



63 



12 



do 



do 



8. 2 0. 9 

 1.5 4.1 



9.1 

 5.6 



"1760 

 '•1730 



White 



Creamy white. 



12 



do 



White. 



13 



24.0 



46 



do 



4.7 0.4 



5.1 



■'1590 



Bluish white ... 



Pale lilac. 



14 













>>1410 

 i<1350 

 "1300 







15 

















16 



















17 













"1350 



Cream v white . 





18 



32. 2 



72 



High 



1.1 



14.7 



15.8 



1150 



Smoky creamy- 

 white. 



Pale reddish choco- 

 late. 



19 



35. 5 



52 



Medium... 



3.7 



3.4 



7.1 



■4510 



Bluish white. __ 



Yellowish pale violet. 



20 



23. 45 





4.8 



0.4 



5.2 



"1535 



do . 



Verv pale violet. 



21 













"1420 

 '4490 

 "1360 

 1200 





Pale gray lilac. 

 Very pale reddish 



22 

















23 



21.0 

 27. 6 



67 

 .58 





3.2 



2.0 



3.1 



16.7 



6.3 



IK. 7 



Grayish white.. 

 Creamy white.. 



24 



High 





















chocolate. 



25 



24.0 



160 



Medium ... 



11.5 



6.1 



17.6 



"1500 



Dark cream 



Violaceous pale gray.' 



26 



25.5 



171 



do 



11.6 



5.1 



16.7 



1350 



Bluish gray 



Gray lilac 1 



27 



20.0 



187 



do 



8.2 



4.4 



12.6 



1350 



Light gray 



Pale gray lilac 1 



28 



23.8 



176 



High 



10.0 



3.8 



13.8 



1330 



Light slate gray- 



Reddish gray lilac. 



29 















1310 



Light gray 





30 















"1150 



Light ocherish 





















gray. 





31 

 32 

 33 















"1290 

 1330 

 1200 





Reddish chocolate. 

 Do. 



26.5 



131 



180 



Medium ... 

 High 



12.5 

 10.0 



11.9 

 1.8 



24.4 

 11.8 



Brown 



Light brown 



34 

 35 



24.6 

 24.3 



78 



77 



Medium ... 

 Below me- 



4.4 



9.8 



14.2 

 8.0 



"1370 

 ■4270 



Buff .. 



Do. 

 Verv pale reddish 



Dark ocher ... 









dium. 













ocher. 



- 



"Given on page 115. 

 "Estimated. 



> Some pieces decrepitate upon burning. 

 ' Decrepitates very badly upon burning. 



It is realized that the field for the ceramic industries is very large and 

 that the contribution of the data which I have collected is of small sig- 

 nificance, but since all information regarding Philippine clays is meager, 



