Kohn, Ferdinand. Iron and steel manufacture. XII, 270 S. With wood engraving-Frontispiz, 64 (17 folded) wood engraving panels and numerous wood engravings in the text. 36,5 x 26,5 cm. OHalf leather (somewhat stained, bumping edges). London, W. Mackenzie, 1869. Roberts-Trent 187. – Comprehensive work on the metallurgy of the late 60s of the 19th century. ==References====External links==* Official website* Official website The chapter "Steel manufacture" (p. 72-131; eight tables) contains detailed information on the Bessemer process and the latest developments of Emil and Pierre Martin and C. W. Siemens, the chapter "Air and Gas Furnaces" (p. 132-146; six Taf.) on those of F. Siemens developed regenerative firing. The following chapter on steam hammers, forging presses and rolling mills. In connection with the Paris World Exhibition, the Krupp company (with an illustration of its 50-ton cannon) is also presented. Compared to the series of articles in "Engineering" about descriptions of various works by Zerah Colburn, essays by W. Fairbairn, Th. E. Vickers, among others, as well as various panels. F. Kohn (1837-1871) was involved in the introduction of the Bessemer as well as the Siemens Martin process in Austria in the 1960s. – Purpose in the front somewhat flaky. Table XII crinkled and dirty and with two cracks, Table X with small crack in the fold.