1925. First Edition Thus. 146 pages. No dust jacket. Brown cloth with gilt lettering. Rough-cut pages. Black and white graphs and illustrations throughout. Light thumb marking and tanning to pages with moderate cracking to gutters exposing netting; pages remain attached. Pen inscriptions to front pastedown. Tanning heavier to text block edges. Binding remains firm. Boards have minor corner bumping and edgewear with mild staining, tanning and scuffing overall. Spine has moderate tanning with soft crushing to ends. Lettering remains bright and clear. Book has a slight forward lean.