The handmaid to the arts: ... . Teaching, I. A perfect knowledge of the materia pictoria, r, the nature, use, preparation, and composition of all the various substances employed in Painting, as well vehicles, dryers, &c. as colours; including those peculiar to enamel and painting on glass. II. The means of delineation, or the several Devices employed for the more easily and accurately making Designs From Nature, or Depicted Representations; either by offtracing, calking, reduction, or other means; with the methods of taking casts, or impressions, from figures, busis, medals, leaves, &c. III. The various manners of gilding, silvering, Bronzing, with the preparation of the genuine Gold and Silver powders, and imitations of them, as also of the fat oil, gold fixes, and other necessary compositions;- the art of Japanning, as applicable not only to the former purposes, but to coaches, snuffboxes, &c. in the manner lately introduced;-and the method of Staining Different Kinds Of AtSubstances, with all the several colours. The whole being calculated, as well for conveying a more accurate and extensive knowledge of the matters treated of to professed artists, as to initiate those who are defirous to attempt these arts, into the method of preparing and using all the colours, and other substances employed in painting in oil, miniature, crayons, encaustic, enamel, varnish, distemper, and fresco, as also in gilding, &c