CALORIFIC VALUE OF PHILIPPINE COALS. 

 Table V. 



195 





Batan 

 Island 

 Military 

 Reserva- 

 tion, 13 

 samples. 



Polillo, 8 

 .samples. 



Compos- 



tela, 6 



samples. 



All 

 others, 58 

 samples. 



Value of *'a" 



Average — 



58.8 

 58.9 

 62.8 

 53.1 

 58.7 

 60.0 

 58.6 

 58.6 

 61.1 

 61.8 

 63.8 

 61.3 

 I 62.6 



58.4 

 66.4 

 64.8 

 59.4 

 59.0 

 63.7 

 59.4 

 62.0 



59.0 

 58.8 

 62.0 

 57.7 

 63.9 

 63.0 











1 











































60.0 



61.6 



60.7 



50.0 



The above averages confirm the facts brought out b}' actual comparison 

 of the calorific value of the gas. The volatile combustible matter in 

 the coal from the Military Eeservation on Batan Island, from Polillo, 

 and from the Compostela region in Cebu has a somewhat higher calo- 

 rific value than from the others. 



For the following percentages of volatile combustible matter in the 

 pure coal the results are as follows: 



Table VI. 



40-42 

 per cent. 



42-43 

 per cent. 



43-44 

 per cent. 



44-45 

 per cent. 



45-46 

 per cent. 



46-48 

 per cent. 



48-50 

 per cent. 



50-52 

 per cent. 



52-58 

 per cent. 



No. 



"a" 



No. 



"a" 



No. 



"a" 



No. 



"a" 



No. 



"o" 



No. 



"o" 



No. 



"a" 



No. 



"rt" 



No. 



"a" 



12 



58.9 



23 



62.6 



16 



60.0 



11 



58.8 



31 



59.4 



15 



58.7 



3 



44.2 



1 



51.8 



20 



61.8 



14 



53.1 



25 



58.4 



17 



58.6 



13 



62.8 



40 



58.7 



32 



62.0 



4- 



51.1 



2 



48.1 



22 



61.2 



48 



55.8 



30 



63.7 



21 



63.8 



18 



58.6 



65 



44.7 



58 



49.3 



5 



47.3 



9 



47.6 



69 



46.9 



52 



■55.9 



35 



59.0 



26 



66.4 



19 



61.1 



68 



49.7 



60 



51.5 



6 



48.5 



79 



44.8 



75 



55.1 



55 



51.3 



36 



58.8 



27 



64.8 



24 



62.1 



78 



42.4 



62 



45.6 j 7 



39.3 



80 



44.0 



76 



61.0 



56 



48.8 



43 



56.8 



29 



59.0 



28 i 59.4 



82 



57.0 



63 



46.7 



8 



42.2 



84 



4i.2 



77 



•52.7 







47 

 49 

 .50 

 61 

 53 

 54 

 57 



52.0 

 58.3 

 54.9 

 54.0 

 54.7 

 57.4 

 51.9 



33 

 34 



46 

 74 

 81 

 87 



57.6 

 5S.7 

 51.9 

 62.1 

 56.7 

 53.5 



39 

 41 

 42 

 45 

 61 



62.0 

 63.9 

 63.0 

 53.0 

 49.9 







64 

 67 



46.3 

 41.7 



10 



44 

 59 

 66 

 71 

 72 



48.9 

 52.5 

 51.4 

 44.3 

 50.9 

 44.6 



85 



41.7 



83 

 86 



50.0 

 32. 2 











































. 

















































" 















































»54.0 







•57.1 



-—•59.4 



— - 



■59.5 







"56.0 







"50.2 







■47.1 





■45.6 







■52.6 



=* Average. 



