A nineteenth-century botanical lithograph by James Duffield Harding, featuring instructional studies of elm, ash, and oak foliage.

James Duffield Harding was a prominent British watercolourist and lithographer, known for his technical mastery in depicting foliage. This print originates from his instructional series, designed to teach students the specific characteristics of various tree species. The plate presents four distinct studies, categorised by lesson number, focusing on the unique branching patterns and leaf clusters of the elm, ash, and oak.

Harding utilised lithography to capture the subtle tonal variations of graphite and ink. Each tree is rendered with a focus on the structural logic of the canopy rather than a complete, realistic silhouette. The artist employs short, rhythmic marks to suggest the density of leaves, demonstrating how light interacts with the irregular forms of the branches. By isolating these elements, Harding provides a clear guide for the aspiring draughtsman to observe nature with precision.

The composition is functional and pedagogical. The page layout allows for direct comparison between the species, with labels identifying each subject clearly. The paper shows signs of age, including foxing, which adds a historical quality to the print. This work reflects the nineteenth-century interest in systematic observation and the popularisation of drawing as a gentlemanly pursuit. It remains a useful reference for those interested in the history of botanical art and the development of lithographic techniques in the Victorian era.