From the Randall-Salter Collection

A stationary glass and a rotating glass to keep the watermill goingA stationary glass and a rotating glass to keep the watermill goingTwo contrarotating glasses, with a tartan patternTwo contrarotating glasses, with a tartan pattern
One stationary glass with the hive and two glasses with the beesOne stationary glass with the hive and two glasses with the beesTwo contrarotating glassed - with a change of direction in the middle of the animationTwo contrarotating glassed - with a change of direction in the middle of the animation
A stationary glass and a rotating glass - but a difficult slide to transfer to this format. You need to watch the insects carefully to see the changes of colour.A stationary glass and a rotating glass - but a difficult slide to transfer to this format. You need to watch the insects carefully to see the changes of colour.Oner stationary glass and one rotating glass, that has to be moved in steps. It's labelled 'Heads of many lands' and is of its time, circa 1890.Oner stationary glass and one rotating glass, that has to be moved in steps. It's labelled 'Heads of many lands' and is of its time, circa 1890.
A slipping slide with a stationary glass and two pivoted glasses with blackouts.A slipping slide with a stationary glass and two pivoted glasses with blackouts.Mount Vesuvius, from a set of of four slides, three which dissolve in sequence and an effect slide with one rotating glass and one partial blackout glass.Mount Vesuvius, from a set of of four slides, three which dissolve in sequence and an effect slide with one rotating glass and one partial blackout glass.