"Nevertheless, efficacious means of restoration have been discovered: a painting, the convass of which is decayed, or the pannel worm-eaten, is transferred to a fresh cloth; the profane touches of a foreign pencil are made to disappear; the effaced strokes are reinserted with scrupulous nicety; and life is restored to a picture which was disfigured, or drawing near to its end. This art has made great progress, especially in Paris, and experienced recent improvement under the superintendance of the Administration of the Museum; but it is only with a religious respect that any one can venture on an operation which may always give rise to a fear of some change in the drawing or colouring, above all when the question is to restore a picture by RAPHAEL."[1]
"The restoration may be divided into two parts; the one, which is composed of mechanical operations, whose object is to detach the painting from the ground on which it is fixed, in order to transfer it to a fresh one; the other, which consists in cleaning the surface of the painting from every thing that can tarnish it, in restoring the true colour of the picture, and in repairing the parts destroyed, by tints skilfully blended with the primitive touches. Thence the distinctive division of the mechanical operations, and of the art of painting, which will be the object of the two parts of this Report. The former particularly engaged the attention of the Commissioners of the _Class of Sciences_; and the latter, which required the habit of handling a scientific pencil, fell to the share of the Commissioners of the _Class of Fine Arts_"
"Although the mechanical labour is subdivided into several operations, it was wholly intrusted to Citizen HACQUINS, on whose intelligence, address, and skill, it is our duty to bestow every commendation."
"The picture represents the Virgin Mary, the infant Jesus, St. John, and several other figures of different sizes. It was painted on a pannel of 1-1/2 inches in thickness: a crack extended from its circumference to the left foot of the infant Jesus: it was 4-1/2 lines wide at its upper part, and diminished progressively to the under: from this crack to the right hand border, the surface formed a curve whose greatest bend was 2 inches 5-1/2 lines, and from the crack to the other border, another curve bending 2 inches. The picture was scaling off in several places, and a great number of scales had already detached themselves; the painting was, besides, worm-eaten in many parts."