Figure 32. Plankton bottle devised by James I. Peck of Williams College,
Massachusetts, and Nathan R. Harrington of Columbia University, New York,
in 1896. It was used to collect plankton, both animal and vegetable, at various
depths. It was first used in 1896 at the entrance to Puget Sound, Washington,
at 5 levels up to 205 meters depth.