Kinds of shafting.—What is the difference between bright and black shafting? [II. 187].

Fitting a pulley.—If you had a pulley whose bore was 11516 inches, what diameter of bright shafting would you order for it? [II. 187].

Locating collars.—What is the best location for the collars that prevent end motion on a line shaft? [II. 189].

Ball and socket hangers.—What are the advantages of hangers having a ball and socket adjustment? [II. 192].

Shaft couplings.—What four objects should the couplings for line shafts accomplish? [II. 194].

Universal joint.—What object does a universal joint accomplish? [II. 199].

Crowning a pulley.—What is the object of crowning a pulley? [II. 201].

Pulley balance.—Why should a pulley be balanced? What is a running and what a standing balance for a pulley? At what speed should a running balance be made? [II. 202].

Size of pulleys.—If a shaft makes 150 revolutions per minute, and it is required to drive a pulley on a machine at 600 revolutions, what proportions must the diameter of the two pulleys have, and what determines the diameters of the pulleys? [II. 205], [206].

Testing belts.—What appearance in leather belting indicates that it was cut from the spongy shoulder? [II. 208].