TO PREPARE A PANEL FOR PAINTING ON.

The panel should be cypress or pear or service-tree or walnut. You must coat it over with mastic and turpentine twice distilled and white or, if you like, lime, and put it in a frame so that it may expand and shrink according to its moisture and dryness. Then give it

[Footnote: M. RAVAISSON'S reading varies from mine in the following passages:

1.opero allor [?] bo [alloro?] = "ou bien de [laurier]."

6. fregalo bene con un panno. He reads pane for panno and renders it. "Frotte le bien avec un pain de facon [jusqu'a ce] qu'il" etc.

7. colla stecca po laua. He reads "polacca" = "avec le couteau de bois [?] polonais [?].">[

The preparation of oils (629—634).

629.

OIL.

Make some oil of mustard seed; and if you wish to make it with greater ease mix the ground seeds with linseed oil and put it all under the press.