Figure 50

Figure 50. Knudsen bottle (first model) for sampling water while a ship is underway. This bottle of very robust construction was devised by the Danish professor Martin Knudsen and used in the Kattegat in 1908 on board the C. F. GROVE and also in 1909 on board the THOR when samples were obtained in 250 meters depth in the North Sea between Aberdeen and Stavanger.

Photo Category: Oceanography - Historical instruments