66 



CONSTRUCTION. 



each section beyond reach of direct fire contact 

 utterly fails to do what in theory it ought to 

 accomplish. Good boilers made by responsible 

 firms are within the reach of all nowadays and it 



23. Constructing house twenty -four feet wide; second 

 step, making beds and walks. 



hardly pays, therefore, to attempt to make them 

 out of coils of pipe. By the time the pipe is pur- 

 chased, put together, and bricked up, and the 

 doors, grates, drafts, and other necessary con- 



