Special examination.—What parts would you pay special attention to in examining the boiler after cleaning it? [II. 371].

Hammer test.—What does the “hammer test” consist of? [II. 371].

Washing and scaling.—What determines the periods at which a boiler should be washed out and scaled? [II. 371].

Regulating dampers.—How would you regulate the dampers when letting the fire out? [II. 371].

Naming the parts.—Name all the parts of a simple or plain D slide-valve engine, beginning with the cylinder. [II. 372].

Dividing the parts.—Into what three divisions may the parts of a plain slide-valve engine be divided? [II. 372].

Defining clearance.—What is the meaning of the word “clearance” as applied to an engine cylinder? [II. 372].

Finding equal clearance.—How would you proceed to find if the clearance in the cylinder was equal at each end? [II. 372], [404].

Parts of valve motion.—What parts constitute the valve motion or valve gear? [II. 372].

The driving parts.—What parts constitute the driving or power-transmitting mechanism? [II. 372].