Attributed works:
27. Ravine, by Vincent van Gogh. 1889. Canvas, 71.8 by 90.5 cm. (Museum of Fine Arts, Boston).
Attributed works:
28. X-radiograph of Fig.27.
Attributed works:
29. Wild vegetation, by Vincent van Gogh. 1889. Reed pen, pen, brush and brown ink on wove paper, 47.1 by 62.4 cm. (Van Gogh Museum, Amsterdam).
Attributed works:
30. Photomicrograph detail of Fig.27. A pink circle from the underlying composition is
visible between the brushstrokes of Ravine. Remnants of underdrawing for Ravine, applied over the underlying painting, are visible on the
pink paint layer.
Attributed works:
31. Detail of Fig.27. Light green, pink and yellow brushstrokes from the lower painting have been left uncovered by Ravine. A small twig, incorporated into the paint of the sky, is visible along the top edge in diagonal orientation.
Attributed works:
32. Detail of Fig.27 from the centre of the composition in raking light showing the ridges of circular brushstrokes with heavy impasto.
Attributed works:
33. Detail of Fig.28, same area as Fig.32. Circular shapes that correspond to the impasto circles seen in Fig.32 stand out clearly in the X-radiograph.
Attributed works:
34. Photograph of Fig.29. 1928. From J.-B. de la Faille: L’Œuvre de Vincent van Gogh. Catalogue raisonné, Paris and Brussels 1928, IV, no.1542, pl.CLXXXI.
Attributed works:
35. Paint cross-section from the middle of the top edge of Fig.27. Four distinct changes in colour are visible: a layer with a series of shades of blue, a thin dark blue-green layer, a yellow-green and blue-green layer applied wet-in-wet, then a light green layer. This sample shows paint layers that are mostly associated with Wild vegetation. The light green layer is probably the first layer associated with Ravine. A light blue paint layer and ground layer are missing at the bottom of this sample, as well as shades of light green and a blue paint layer at the top. Synthetic ultramarine was used for the lower composition, cobalt blue for the upper. Lead white is concentrated in the lower painting, zinc white in the upper.
Attributed works:
36. Photomicrograph detail of Fig.27 showing graphite or charcoal associated with the underdrawing of Ravine caught up in the paint as it was applied over the drawing lines.
Attributed works:
37. Photomicrograph detail of Fig.27. A line of underdrawing with granular, shiny particles of graphite or charcoal can be seen between the brushstrokes of Ravine.
Attributed works:
38. Ravine, by Vincent van Gogh. 1889. Canvas, 73.2 by 93.3 cm. (Kröller-Müller Museum, Otterlo).
