(25 cm), xiv, 218 (2) pp., frontispiece, 14 plates, text illustrations. Errata slip tipped in. Publisher’s cloth, dust jacket. - First edition. The author was the biographer of James Watt and Robert Fulton and co-author of an authoritative work on the early steam engine. ¶ Dust jacket soiled and damaged (without loss); otherwise a very good, unmarked copy.