# The Mildmay Sea-Piece, plate 40 from Liber Studiorum

- By: Joseph Mallord William Turner (engraved by W. Annis and I.C. Easling)
- Date: published February 11, 1812
- Medium: Etching and engraving in brown on ivory wove paper
- Classification: Print
- Dimensions: Image: 18.1 × 26.3 cm (7 3/16 × 10 3/8 in.); Plate: 21.1 × 29.2 cm (8 5/16 × 11 1/2 in.); Sheet: 29.4 × 44.3 cm (11 9/16 × 17 1/2 in.)
- Culture: England
- Credit line: The Joseph Brooks Fair Collection
- Museum: [Art Institute of Chicago](https://www.artic.edu/artworks/112023)
- Rights: [Public domain (CC0)](https://creativecommons.org/publicdomain/zero/1.0/)
- Picture: https://www.artic.edu/iiif/2/710adcfe-ba42-9a80-9aee-6416b777f508/full/!1920,1080/0/default.jpg
- Who can see it: Little Ones profiles and older (museums give no ratings; placed by Invisible Network from the museum's own words)

The Liber Studiorum (Book of Studies) served as both a testament to Joseph Mallord William Turner’s achievement as a painter and an instruction manual for other artists. As opposed to artists who commissioned professional printmakers to reproduce their paintings, Turner made his etchings, and even some of his mezzotints, himself. He was involved in the entire process, making sure that each print measured up to his standards. The variations in line and shading expertly display the range and variety of atmospheric effects that a landscape painter can achieve, an impressive accomplishment for Turner.

Description © Art Institute of Chicago, CC BY 4.0