The novel idea of fishing a large net without a towing line was adapted from the method used by Professor Maurice Ewing of Lehigh University in his work on the sub-sedimentary rocks beneath the sea. The method consists essentially in dragging the apparatus to the bottom by a weight against the upward pull of a float and then releasing the weight....
Wheeler, J. F.. 1941. "The parachute net." Journal of Marine Research 4, (1). https://elischolar.library.yale.edu/journal_of_marine_research/585