Mural circle transit instrument, Paris Observatory, France, 1884.

Equatorial refracting telescope, Paris Observatory, France, 1884.

A specimen of electro-telegraphy, France, 1863.

Photograph of the Sun, taken from Paris, France, 20 July 1875.

Photograph of the Sun, taken from Paris, France, 20 July 1875.

Reflecting telescope, Paris Observatory, 1884.

The Tisandier airship 'La France', 1883.

A model of the Tisandier 'La France' airship of 1883.

'South Foreland Lighthouse', Dover, Kent, 1875.

Elderly couple, autochrome, c 1910.

Sidney Gilchrist Thomas, inventor and metallurgist, 1875-1885.

'Old Familiar Flowers', English, 1919.