APPENDIX. l8l 



The Committee also indorses the statement of the Com- 

 mittee of 1885 concerning the commercial rating of boilers, 

 changing somewhat its wording, so as to read as follows : 



" It is the opinion of this Committee that a boiler rated 

 at any stated horse-power should develop that power when 

 using the best coal ordinarily sold in the market where the 

 boiler is located, fired by an ordinary fireman, with a draft at 

 the smoke-box not exceeding f inch of water column ; and, 

 further, that the boiler should develop at least one third 

 more than its rated power when operated with the best sys- 

 tem of firing and with the full draft available." 

 Respectfully submitted, 



CHAS. E. EMERY,* 



WM. KENT, 



GEO. H. BARRUS, 



CHAS. T. PORTER, 



ROBERT H. THURSTON, ^Committee. 



ROBERT W. HUNT, 



F. W. DEAN, 



J. S. COON, 



WM. B. POTTER, 



RULES FOR CONDUCTING BOILER-TRIALS, 

 CODE OF 1897. 



PRELIMINARIES TO A TRIAL. 



I. Determine at the outset the specific object of the pro- 

 posed trial, whether it be to ascertain the capacity of the 



* The motion for the appointment of this Committee was made by Mr. 

 Barrus in connection with the discussion of Mr. Dean's paper, No. DCL, 

 on "The Efficiency of Boilers," etc. The President of the Society desig- 

 nated Mr. Kent, the chairman of the Committee of 1884, to call the firsi 

 meeting of the new Committee. At that meeting, on motion of Mr. Kent, 

 Dr. Emery was selected as chairman, and he conducted the preliminary 

 correspondence. The report in the form originally printed was prepared 

 by a sub-committee consisting of Messrs. Emery, Porter, Barrus, and 

 Kent. 



