zoöphyte-trough

Century Dictionary and Cyclopedia

1. n. A device for retaining living zoöphytes or infusoria which are to be examined under the microscope. It consists of a frame with two movable sides of glass, and a false bottom, also of glass, small enough to admit of the insertion of the sides between it and the frame. The upper edges of the sides are pressed together by a spring, and can be separated as desired by a wedge. E. H. Knight.