Historical Painting Techniques, Materials, and Studio Practice

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Figure 2. Infrared rriflectogram assembly if the cherub standing 01'/ the throlle (lift side, area if rriflecto­

gram: 23 X 10 C/'I'/). Type I drawing is visible, characterized by an even, relatively narrow width.

Rriflectograph by M. Faries.

The underdrawing

Infrared reflectography reveals distinct campaigns of underdrawing that can

be described in fo ur groups (12). Type I is characterized by a narrow, even

line that skips over the surf ace of the ground. It is the first drawing stage in

all three of the main panels and the St. Nicholas predella panels. There is only

a small area of type I drawing in one of the St. Anthony predella panels. The

drawing made using this material is summary. An example of this drawing

type in the cherub on the throne is illustrated in Figure 2. This underdrawing

Historical Painting Tech niques, Materials, and Studio Practice