Dissecting Microscope in Case, by Bate, London, 1820-40

A modification of the Ellis-type aquatic microscope. A cylindrical pillar screws into a boss in the top of the black fishskin box. Rackwork moves an inner cylinder, to which is attached an arm carrying the objective in a housing that allows arc, forward, and backward movement. The circular stage has an ivory/cork stage disc. There is a concave mirror, stage forceps, and four objectives, two of which have Lieberkühn's attached to them.