Figure 17. Challenger model of the Buchanan bottle, devised by the chemist of the expedition, John Buchanan, to sample intermediary layer waters. Left: descending. Middle: closing. Right: ascending. This type of bottle was used during the course of the voyage, from 1872 to 1876.
Photo Category: Oceanography - Historical instruments
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| Added On | 18th October 2015 |
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