1251 - STODOLA, A. *Die Dampfturbinen*. With an appendix on the prospects for heat engines and on the gas turbine, Berlin (Julius Springer), 4th expanded edition, 1910. Large in-8°, gilt cloth, pp. xvi + 708 + [iv, publisher’s catalog] with 856 figures in the text and 9 folding plates.

STODOLA, A. *Die Dampfturbinen*. With an appendix on the prospects for heat engines and on the gas turbine, Berlin (Julius Springer), 4th expanded edition, 1910. Large in-8°, gilt cloth, pp. xvi + 708 + [iv, publisher’s catalog] with 856 figures in the text and 9 folding plates. Stamped by Hans Bolza. Aurel Boleslaw Stodola (1859–1942) was a pioneer in the field of thermodynamics and its technical applications. A professor of mechanical engineering at the Swiss Federal Institute of Technology in Zurich, where Albert Einstein was one of his students, his treatise *Die Dampfturbine* (first published in 1903) is a classic of the discipline. He corresponded with Einstein and Albert Schweitzer on questions of the philosophy of economics. We add POHLHAUSEN, A. *Die Dampfmaschinen …* Vol. I *Die Wärmemechanik und die Kolbendampfmaschinen*, Mittweeda (R. Schultze), 3rd revised edition. Large 8vo, gilt cloth, pp. viii + 509 + 15 [publisher’s catalog] with 454 figures in the text and 20 fold-out plates. Stamp of Hans Bolza. Provenance: library of Hans and Oscar BOLZA, then passed down through the family.