followed on all drawings. Where several draftsmen are employed on the same piece of work there is liable to be quite a diversity of details, illustrating the individualities of the various draftsmen making them.

Fourteenth. When a change is made in any part of a drawing, see that said change is carried through all the sheets which are affected thereby.

Fifteenth. See that when any drawing or portion thereof is abandoned it is so indicated clearly throughout all the drawings.

Sixteenth. Check all forked ends for transverse bending, and see that they have been reinforced wherever necessary.

Seventeenth. Wherever timber-bolts are to be used, see that they are plainly indicated, that their sizes and lengths are given, and that washers are provided beneath all heads where the bearing is on the wood.

Eighteenth. See that all screw-ends of rods are upset, unless they are to have cold-pressed threads. See that all diagonal rods are provided with proper adjustments, and that all clevis-pins and plates are of proper strength. See that no pins of less than two and a half inches diameter are used, and that they are set at least one and one-half diameters from edge of plate.

Nineteenth. See that each sheet is provided with general notes, as follows:

A. Kinds of material to be used throughout the structure.

B. Diameters for rivets.

C. Sizes of rivet-holes before and after reaming.

D. Manner in which the edges of all web-plates are to be finished.

E. What ends are to be faced and what are not.

Twentieth. See that all notes are written in good English, that all words are spelled correctly, and that they express exactly what is intended.

Twenty-first. See that each drawing is provided with proper titles, that it is numbered correctly, that the scale or scales are indicated, and that the name of the draftsman and date of completion of drawing are given.