Panel No. 12—Bright Red Iron Oxide. In general good condition. Film intact and unfading in color.
Panel No. 14—Venetian Red. Similar to Panel No. 12, but slight corrosion apparent beneath, in localized spots, and film showing slight wart-like formations.
Panel No. 15—Prince’s Metallic Brown. Similar to Panel No. 14.
Panel No. 16—Natural Graphite. Deeply pitted in spots, showing bulbous eruptions, indicating the stimulative nature of this pigment.
Panel No. 17—Artificial Graphite. In same condition as Panel No. 16.
Panel No. 19—Lampblack and Barytes. Although the film seems to be intact, there are apparent abrasions of the surface showing stimulative corrosion effects of a pronounced nature.
Panel No. 21—Carbon Black and Barytes. In same condition as Panel No. 19.
Corrosion Pits on Graphite Panel