## Gypsum and glue ground preparation – Video

The operational precepts are extensively described by Cennino Cennini (The Book of Art, late Fourteenth Century) who, specifying the various fundamental phases for a preparation with gypsum and glue, handed down the customs typical of Mediterranean countries.

## Crivelli – Mixed media

The use of a mixed technique can be recognized for most of the paintings between the Fourteenth and Sixteenth Centuries: in fact, if we define the paintings whose only binder is egg yolk as “egg tempera” …