PART II. 



Kind of boilers, 



Boiler No. 1. 



f One horizontal return tubular. 



I One horizontal direct tubular. 

 Number used, ...... Two. 



Horse-power ( collective, basis 12 sq. ft.), . One hundred and seven. 



Kind of coal, Anthracite, Hazelton, Chestnut. 



Age, ........ Fifteen years. 



Boiler No. 1 consists of two horizontal tubular boilers, 

 set side by side, as shown in the following cuts. They may 

 be called superheating boilers, since all the steam generated 

 by them passes through superheating pipes located in the 

 combustion chamber under the return tubular boiler. The 

 direct tubular boiler is provided with steam heating surface, 

 which consists of the upper surface of the shell, a part of 

 which is exposed to the heat of the escaping gases. This 

 surface had not been cleaned for a long time, and probably 

 had little effect in drying the steam. 



BOILER No. 1, CROSS SECTION THROUGH FURNACES. 



(67) 



