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Figure 20. Ekman insulated bottle invented by Professor Fredrik Eckman forstudies of the temperature and salinity of the waters of the Skagerrak in 1869.A model of this type was used by Nordenskiold on the VEGA in 1878 and was alsoused by the FRAM in 1893. This image shows the bottle in the descendingposition. (Image credit: Oceanographic Museum of Monaco | Y. Berard)