Figure 34. Gilson messenger, devised by Professor Gustave Gilson of the
University of Louvain and delegate from Belgium at the Permanent International
Council for the Exploration of the Sea
, to intiate the operation of his plankton meter.
Image ID: ship4406, Voyage To Inner Space - Exploring the Seas With NOAA Collect Photographer: Y. Berard Credit: Oceanographic Museum of Monaco