194 APPENDIX. 



table, and numbered, as per preceding line, with sub letters, 

 a, b, etc. 



DATA AND RESULTS OF EVAPORATIVE TRIALS. 



Made by of boiler at to 



determine 



Principal conditions governing the trial 



Kind of fuel 



State of the weather 



1. Date of trial 



2. Duration of trial hours. 



Dimensions and Proportions. 



(A complete description of the boiler should be given on an annexed 

 sheet.) 



3. Grate surface width length area sq. ft. 



4. Water-heating surface 



5 . Superheating surface 



6. Ratio of water heating surface to grate surface 



7. Ratio of minimum draft area to grate surface 



Average Pressures. 



8. Steam-pressure by gauge Ibs. 



9. Atmospheric pressure by barometer in. 



10. Force of draft between damper and boiler 



11. Force of draft in furnace 



12. Force of draft in ash-pit 



Average Temperatures. 



13. Of external air deg. 



14. Of fire room . . . . t 



15. Of steam 



16. Of feed water entering heater 



17. Of feed water entering economizer 



18. Of feed water entering boiler 



19. Of escaping gases from boiler ........ 



20. Of escaping gases from economizer 



