‎"STEINHEIL. C.A. (KARL AUGUST).‎
‎Beschreibung und Vergleichung der galvanischen Telegraphen Deurschlands nach Besichtigung im April 1849. Feststellung der vortheilhaftesten Ssteme. Angabe einer Verbesserung des Morse'schen Apparates.‎

‎(München, 1849). 4to. Contemp. clothbacked boards. Stamp on title-page. Some browning to title-page and last page. A dampstain in upper margin on the first 4 leaves. Some marginal brownspots to the last 3 leaves. Title-page (2) pp. and pp. (779-)840, some textillustrations. In ""Abhandlungen der H. Cl. d.k. Ak. d. Wiss. V.Bd. III Abth.""‎

Reference : 52162

‎First edition. Here Steinheil investigated the German telegraphic lines, and gives suggestions for improvements. From 1849 to 1852 he organized telegraph communications in Austria.""Steinheil exerted great influence on the scientific life at Munich. He was a keen-witted discoverer and inventor, especially in optics and telegraphy. In 1838 he theorized that the earth could serve as the second half of a telegraphic circuit"" and in 1842 he constructed an ingenious photometer."" (DSB).Ronalds, p. 485. - Wheeler Gift, 1166. - Poggendorff II, 997.‎