Stronger side of belts.—Which is the stronger side of leather, the smooth or grain side or the rough or flesh side? [II. 208].

Placing a belt tightener.—Should a belt tightener be placed on the tight or slack side of a belt? [II. 210].

Crossed vs. open belt.—Which will transmit more power, an open or a crossed belt, and why? [II. 210].

Crossed belt.—What are the objections to a crossed belt? [II. 210].

Shortening a round belt.—Can a round twisted belt be shortened without removing either the hook or the eye and how? [II. 216].

Wide belt.—How would you get a very wide belt on a pulley? [II. 217].

Mending an eccentric rod.—Suppose an eccentric rod broke, and you were required to weld it again, what shape could you make the scarf for the weld? [II. 234].

Butt weld.—What is a butt or pump weld? [II. 236].

Scarf weld.—Describe roughly the means you would employ to make a scarf weld. [II. 235].

Tongue weld.—What are the shapes of the two pieces that come together in a tongue weld? [II. 235].