Figure 15. Zacharias ethmophore plankton filter devised by Otto Zacharias in1907. Top: view of the assembled apparatus. Bottom: internal speed reductionvalve. This instrument was devised to collect plankton under adverse meteorological condition
4/4/2019 2:00:39 PM
Photographer: D. Mille
Credit: Oceanographic Museum of Monaco
Subject: Oceanography
Subject: Historical instruments