Figure 5. Stellwagen sampling sounder invented by Lieutenant Henry S. Stellwagen, USN, while on Coast Survey duty in 1842. This sampler was undoubted ly one of the first sounder-samplers of simple design that was used in a systematic manner for scientific purposes. It was invented in 1842.
Photo Category: Oceanography - Historical instruments
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| Added On | 18th October 2015 |
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