Figure 19. Closing device for Chun and Petersen net first devised by Giuseppe Palumbo, commanding officer of the VETTOR PISANI. In the course of its around the world oceanographic cruise of 1882-1885, the idea to develop a helical clos ing device for a towed plankton net was developed. Prince Albert I of Monaco adapted this idea to a vertical net during the expedition of 1887.
Photo Category: Oceanography - Historical instruments