New York: John Wiley & Sons, 1898. Hardcover. ix, 351p., appended figures (31), hardbound in first edition brown cloth boards; cloth casing is a bit worn and discolored with a faint but pervasive stain, rear endsheets lightly bear the stain also; find several geometric diagrams worked out in text margins, in pencil. Has an old ownership signature ("Cornell '99"), no other markings. Rear hinge slightly weak. A good-only copy.