BOILER TESTS; 



EMBRACING THE RESULTS OF ONE HUNDRED AND 

 THIRTY-SEVEN EVAPORATIVE TESTS, MADE 

 ON SEVENTY-ONE BOILERS, CON- 

 DUCTED BY THE AUTHOR. 



BY 



GEO. H. BARRUS, S. B., 



MEMBER OF AMERICAN SOCIETY OF MECHANICAL ENGINEERS, 

 AND BOSTON SOCIETY OF CIVIL ENGINEERS. 



NEW YOKK: 

 D. VAN NOSTRAND COMPANY 



1900 



