A Mermaid

Painting by John William Waterhouse, completed in 1900,now in the collection of the Royal Academy of Arts.

Consulting the Oracle

Oil painting by John William Waterhouse, showing a priestess using a mummified head, a tephra, as an oracle.

Gouache

Opaque watercolour in which the pigments are bound together by glue.

How They Met Themselves

Painting by Dante Gabriel Rossetti, in which a couple in medieval costume are confronted by their doubles.

Tempera

Term applied to any paint in which the pigment is dissolved in water and mixed with an organic gum or glue.