Cyanotype of a Ceylonese fern, 1853.

Cyanotype of a North American fern, Adiantum pedatum, 1853.

Cyanotype of Aspidium trapezoides, 1853.

The Parthenon, Athens, from the north west, 1851.

'Himanthalia lorea', 1843.

Camera obscura, early 18th century.

Cyanotype of a British fern, 1853.

Cyanotype of Polypodium vulgare, 1853.

Cyanotype of Jamaican fern, Adiantum striatum, 1853.

Cyanotype of Ceylonese fern, 1853.

Cyanotype of Aspidium lobatium, 1853.

Autochrome of flowers in a vase with fruit, c 1908.