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 be wholly executed by one person, or at most by two, and especially should there be no distinction between "finisher" and "forwarder," between "executant" and "artist."

The following technical names may serve to call attention to the principal features of a bound book.

(1) The back, the posterior edge of the volume upon which at the present time the title is usually placed. Formerly it was placed on the fore-edge or side.

The back may be (a) convex or concave or flat; (b) marked horizontally with bands, or smooth from head to tail; (c) tight, the leather or other covering adhering to the back itself, or hollow, the leather or other covering not so adhering; and (d) stiff or flexible.

(2) Edges, the three other edges of 144