342 



The Philippine Journal of Science 



I have recalculated the factor in foot-note "f." p. 317, which 

 then becomes: 



658.9-79.2 



536.5 



(factor of evaporation) x 8.961.5 



= 1.0786 X 8.961.5 = 9,666. 



These calculations of the heating surface of the water-tube 

 boiler and the factor of evaporation change the results of the 

 tests shown in Table II, pages 313, 314, 315, and 316 ; Table III, 

 pages 319, 320, and 321; and Table X, page 344. The recal- 

 culated values are shown under the respective headings in the 

 following tables, which are self-explanatory: 



From Table II, page SIS. From Table II, page SI4.. 



Test 



Dry coal consumed per 1 

 square decimeter of water- 

 heating surface per hour. , 



Test 

 No. 



Combustible consumed per 

 square decimeter of water- 

 heating surface per hour. 



No. 













Former 

 value. 



Recalculated 

 value. 





Former 

 value. 



Recalculated 

 value. 





Kilos. 



Kilos. 





KUos. 



Kilos. 



1 



0.0317 0.0283 



1 



0. 0277 



0.0248 



2 



0.0321 0.0287 



2 



0.0282 



0.0261 



3 



0.0268 0.0239 



3 



0.0243 



0.0217 



4 



0.0296 ; 0.0264 



4 



0. 0257 



0. 0230 



6 



0.0299 



0.0267 



5 



0. 0260 



0.0232 



6 



O.0SB4 



0.0316 



6 



0. 0309 



0.0277 



7 



0.0327 



0.0292 



7 



0.0293 



0.0262 , 



8 



0.0374 



0.0348 



8 



0.0363 



0.0325 



9 



0.0393 



0.0351 



9 



0.0382 



0.0341 



10 



0.0381 



0.0340 



10 



0.0346 



0.0309 } 



H 



0.0326 



0.0291 



11 



0.0304 



0.0271 I 



12 



0. 0325 



0.0290 



12 



0.0308 



0.0275 



13 



0.0326 



0.0291 



13 



0.0315 



0.0282 



14 



0.0299 



0.0267 



14 



0.0290 



0.0258 



15 



0. 0359 



0.0321 



15 



0.0328 



0. 0293 



16 



0.0416 



0.0371 



16 



0.0364 



0. 0326 



17 



0. 0309 



0. 0277 



17 



0.0290 



0.0259 



18 



0. 0291 



0. 0260 



18 



0.0272 



0.0241 



