very profitable has been thus accomplished.
554.
Painting consists, strictly speaking, in the intermixture of such specific colouring bodies and their infinite possible combinations—combinations which can only be appreciated by the nicest, most practised eye, and only accomplished under its influence.
555.
The intimate combination of these ingredients is effected, in the first instance, through the most perfect comminution of the material by means of grinding, washing, &c., as well as by vehicles or liquid mediums which hold together the pulverized substance, and combine organically, as it were, the unorganic; such are the oils, resins, &c.—Note V.