Page:A Treatise on Painting.djvu/216

 to shew great eagerness and meaning; and its position is to be so well appropriated to that meaning, that it cannot be mistaken, nor made use of for any other.   painter ought to notice those quick motions, which men are apt to make without thinking, when impelled by strong and powerful affections of the mind. He ought to take memorandums of them, and sketch them in his pocket-book, in order to make use of them when they may answer his purpose; and then to put a living model in the same position, to see the quality and aspect of the muscles which are in action.   first and principal part of the art is composition of any sort, or putting things together. The second relates to the expression and motion of the figures, and requires that they be well appropriated, and seeming attentive to what they are about; appearing to move with alacrity and spirit, according to the degree of expression suitable to the occasion; expressing slow and tardy motions, as well as those of eagerness in pursuit: and that quickness and ferocity be expressed with such force as to give an idea of the sensations of the actors. When a figure is to throw a dart, stones, or the like, let it be seen evidently by the attitude and disposition of all the members, that such is its intention; of which there are two examples in the opposite plates, varied both Rh