‎"FORCHHAMMER, G.‎
‎Om Midlerne til at bestemme Mængden af de organiske Bestanddele i Vandet, og om de Forandringer, som Vandet i de Reservoirer, der forsyne Kjöbenhavn, lider i de forskjellige Aarstider, og under forskjellige andre Indflydelser. (In ""Det Kongelige Dansk...‎

‎(Kjöbenhavn, Bianco Luno, 1850). 4to. In a nice recent blue half calf binding. In ""Det Kongelige Danske Videnskabernes Selskabs Skrifter, 5te række, 2det bind"". With a few brownspots, otherwise a nice copy. (3), 94-119 pp. + 1 folded handcoloured maps. ‎

Reference : 62446

‎First edition of Forchhammer’s important work in which he outlines methods to measure organic content in water and examines changes in water supplies feeding Copenhagen’s reservoirs. He collaborated with engineers to assess raw water quality, which later influenced decisions on artesian well drilling to improve Copenhagen’s drinking-water supply. Forchhammer was a geologist, chemist and professor (1794–1865), noted for foundational work in marine chemistry and hydrography.‎