Closing-Nets for vertical hauls and for horizontal towing.
Conseil permanent International pour l’Exploration de la Mer. Publications de Circontance no. 67.
Copenhague: Andr. Fred. Høst & Fils, 1915. 8pp. Large 8vo. Publisher’s wrappers.
A near fine copy.
Nansen on his methods for sampling plankton in the different water layers in the ocean. The system is still being produced, with some adaptations, and go under the name «The Nansen Closing Net».