APPENDIX, 



REPORT OF THE COMMITTEE ON THE REVISION OF THE 

 SOCIETY CODE OF 1885, RELATIVE TO A STANDARD 

 METHOD OF CONDUCTING STEAM-BOILER TRIALS. 



Presented to the New York meeting of the American Society of Mechani- 

 cal Engineers, December, 1897, and forming a part of the Transac- 

 tions, Volume XIX. 



To THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS. 



Gentlemen : The undersigned Committee, to which was 

 submitted the revision of the Society Code of 1885, relative 

 to a standard method of conducting steam-boiler trials, 

 reports as follows : 



The former Committee gave a full statement of the prin- 

 ciples which governed it in the preparation of the Code of 

 Rules at that time recommended. These principles covered 

 the ground in an admirable manner, so far as the practice of 

 boiler-testing had been perfected, and we are in unanimous 

 accord with the sentiments which the report of that Com- 

 mittee expressed. During the interval of twelve years which 

 has passed, methods and instruments have in some measure 

 changed. Improvements have been made in the instruments 

 for determining the moisture in steam. The throttling and 

 separating form of calorimeters have displaced the barrel and 

 other types of steam calorimeters referred to in the previous 

 report. Attention has been devoted to the determination of 

 the calorific value of coal, and a number of coal calorimeters 



i77 



