704 TRANSACTIONS OF THE 



formed under a low but constantly increasing pressure ; and un- 

 der such circumstances, the volume of the steam produced, and 

 the consequent ebullition, are much greater than when the full 

 pressure is attained, caution should be employed in firing while 

 getting up the steam, especially when the tubes are small. If the 

 fire is at first made too strong, the water will be driven out of the 

 lower tubes. When the pressure has attained its proper height, 

 the fire may be increased without fear, and the water will resume 

 its steady and accustomed level. 



The great defect of almost all tubular boilers is the dijfficulty 

 of cleaning them. 



Subject of next meeting — " The mode of setting boilers and 

 steam engines in general practice." 



The Chairman appointed the following special committee on 

 Mr. Amory's boiler and furnace, viz : Messrs. Stetson, Reynolds 

 and Cohen. 



The Club then adjourned. 



M. HASKELL, Secretary pro tern. 



