ON CONSUMPTION OF FUEL AND PREVENTION OF SMOKE. 115 



To all those practically acquainted with the subject, it is well known that 

 a boiler of limited capacity, when overworked, must he forced, and this forcing 

 is the gangrene which corrupts and fosters the whole system of operations. 

 Under such circumstances perfect combustion is out of the question, and 

 any attempt at ceconomy is, as heretofore, a complete failure. I have been 

 the more particular on these points from having witnessed innumerable 

 errors and mistakes in this respect, and it cannot be too forcibly impressed 

 upon the minds of the public, that a large boiler is one of the essentials 

 absolutely necessary for the acquirements already insisted upon. 



IMPROVED STATIONARY BOILER. 



SECTIONAL ELEVATION. 

 Fig. 2. 



SECTION AT AB. 



FRONT OF BOILER. 



Description. 

 Figs. 1 and 2 represent a plan and longitudinal section of the boiler with 

 double flues and double furnaces, and figs. 3 and ^ a transverse section and 



i2 



