The Gardens of l'Hermitage, Pontoise

surface prep

The canvas should be prepared with a traditional oil ground, likely using a mixture of chalk white and oil, consistent with the period’s standard practice for oil painting on canvas (Source 4). Pissarro worked on canvas supports typical of the mid-19th century French academic and realist traditions. The ground should be smooth enough to allow for the 'generous' application of paint but textured enough to hold the brushstrokes characteristic of his plein air work.

underdrawing

Pissarro’s preparatory methods are not explicitly detailed in the provided sources, but his emphasis on 'painting generously and unhesitatingly' suggests a minimal or non-existent detailed underdrawing (Source 6). Instead of precise contour lines, he likely relied on a loose sketch or direct painting to capture the 'mass and volume' of the landscape elements (Source 8). The focus was on the overall composition and light rather than intricate line work.

underpainting

An underpainting (imprimatura) may have been used to establish tonal values, though Pissarro’s method of 'keeping everything going on an equal basis' implies a more direct approach (Source 6). If used, it would likely be a thin wash of earth tones (ochres or umbers) to set the mid-tones, allowing for the 'broken tones' mentioned in color theory discussions (Source 1).

Plein Air Painting

Painting outdoors to capture the direct effects of light and atmosphere on the landscape. Pissarro was inspired by Corot to paint from nature, seeking to express the beauties of nature without adulteration.

Simultaneous Contrast

Understanding that colors appear different when placed next to each other. The painter must perceive and imitate these modifications to achieve accurate color representation.

Generous Brushwork

Applying paint 'generously and unhesitatingly' to maintain the vitality and immediacy of the scene. This avoids overworking the paint and preserves the freshness of the observation.