CHARACTERISTICS OF PHILIPPINE COAL. 3 
TABLE I.—Representative analyses and calorific values, etc—Continued. 
Ultimate analyses and calories by calorimeter 
of the air-dried samples. 
g Source. | 4 
a | Rita || Ose || Serie ain |Available 
FS Hydro-\carbon,| Ni v My Ash. | calo- | heating 
3 gen. gen. gen. phur. een | saiee 
Per ct. | Per ct. | Per ct. | Per ct. | Per ct. | Per ct. | Per ct. | Calories. 
1 PRD 2g eeseeeee! 0.49 5.27 | 6,967 6, 589 
2 1.59 0. 32 4.06 | 7,152 6, 775 
3 1.70 0. 67 3.43 | 6,933 6, 542 
4 1.61 0.71 2.26 | 7,182 6, 794 
5 1.54 0.21 3.01 | 7,301 6, 910 
15 | Bulalacao, Mindoro __-_--_ 5.87 | 52.60 0.96 2.54 8.51 | 5,363 4, 959 
16 | Comansi, Cebu ---_------- 5.11} 66.18 1.72 2.40 4.43 | 6,600 6, 248 
17 | Camujamayan Valley, 
Cebuetes= 2h ents e3 4.81 | 52.32 1.55 | 36.04 0.34 4.94! 4,819 4, 428 
it eee CO) ea ees eases ba seeoee| pe eee TGS) eee ena 0. 40 4.96 | 5,580 5, 190 
19) Pane= GO See ene enone ee ofa oes kas GAG Beane 0. 65 3.47 | 6,135 5, 761 
20 | Compostela, Cebu___-___-_- 5.72 | 66.46 2.10 | 22.34 0. 42 2.96 | 6,779 6, 424 
21 | Sibuguey Bay, Mindanao_| 5.44/ 170.20 1.73 | 20.34 0. 43 1.86 | 7,071 6, 751 
a In the usual determination of the calorific value of a fuel in a calorimeter, the products 
are cooled to the ordinary temperature and the result, therefore, is higher than can ever be 
realized in ideal practice, where the resulting gases always leave the flues at a temperature 
above 100°. Since the object of the determination of the calorific value of a fuel is to show 
its technical worth, I always have calculated the results on Philippine fuels on the assump- 
tion that the moisture present and the water formed during the combustion remain as 
steam at 100°, 7. e., I have made a water correction by subtracting 6 calories for each per 
cent of water. Some mechanical engineers do not make this correction and, therefore, obtain 
2 result from 5 to 8 per cent too high; in order that my results may be comparable in all 
cases I have decided to give, also, the uncorrected results under the caption ‘Main calories.” 
For the purposes of comparison and to indicate the class of 
coal with which Philippine coal must compete, I have segregated 
in Table II representative analyses and calorific values of ships’ 
cargoes of coal arriving in Manila which were sampled and anal- 
ysed from December, 1910, to April, 1911, and, in Table III, I have 
given certain other coals which have the possibility of a market 
in the Philippines. Most of the analyses were made by F. B. 
Beyer. 
