12 Cox. 
The loss of heat in the use of the Philippine coal was for the 
greater part through the smokestack, although a certain amount 
was due to fine coal falling through the grate; the amount of 
the latter may be seen from Table IV and of the former from 
the last column of Table IV and from Table V. 
TABLE V.—Flue temperatures when various coals were burned. 
(Figures give degrees centigrade.) 
West- | Lichzow A | | 
wald- Valley, | Karatsu,| Yubari, | Labuan, Liguan, | East | Comanai, 
Source. ane Aus. Japan. | Japan. | Borneo. ee | Baten | Cebu. 
tralia. | 
| | | | 
Average_______- 362 395 333 395 388 373 | 423 | 866 | 
Maximum --_-___- 450 517 385 460 510 470 | 540 | 495 | 
Minimum______- 320 320 285 335 280 282 | 365 315 | 
i | J 
The above results on Philippine coal are compared in Table 
VI with the ordinary Australian Coal Numbers 1 and 2, pur- 
chased by the Bureau of Supply on Circular Proposal Number 
248, and used as a fuel by the Bureau of Science. This coal 
is “double-screened and picked twice.” The contract price de- 
livered at Manila, piled in the coal sheds and yards of the Civil 
Government, is 10.75 pesos (5.375 dollars) per ton of 2,240 
pounds. The price at the present time remains practically un- 
changed. 
TABLE VI.—Calorimeter and steaming tests of Philippine compared with 
Australian coal Nos. 1 and 2, Table IV as unity. 
(Figures give average percentages.) 
From Table IV. From Table I. 
3 lesleeia lot le | 2 ae 
=] gS | ga] 7 5 = =) 853/00 > 
8i/Salfele2.| 2 a | 8 | ae ee 
3|/S2/|/ Sn] 85| 0 a@ ji 12) ©) ae g 
Sel as|as| se] S gf| = | 8-183] a 
gg) e"|e|#2/ 2] « | 25| F | 38] 2*| 22 
Se B= i 
a</e3les}e|2/2/18 | elas|e@ | 2 
2 Se] RE] i) o = S a>|o = 
E las) as) Oo] a 1m OO ee ate 
Calorimeter calories _-_____ 100 94 99 70 94} 101 15 94 W7 97) 102 
Actual steaming value_____ 100 64 93 63 p37. Oh Ribera Femseenere| Peeves Key fim, oo [= 
Expected efficiency realized) 100 68 94 90 90! | 2-222] Sok Se se Eo eee 
Tables IV and V show that the better grades of Philippine 
coals, Compostela and Comansi in Cebu, western Batan Island, 
Polillo, etc., can stand on their own merits and successfully be 
used under stationary boilers and for similar purposes.5 Coals 
*The Bureau of Science has made no experiment to determine their value 
where forced draft is employed. 
