Chap. CXLI.—How you may learn to compose Groups for History Painting.
When you are well instructed in perspective, and know perfectly how to draw the anatomy and forms of different bodies or objects, it should be your delight to observe and consider in your walks the different actions of men, when they are talking, or quarrelling; when they laugh, and when they fight. Attend to their positions, and to those of the spectators; whether they are attempting to separate those who fight, or merely lookers-on. Be quick in sketching these with slight strokes in your pocket-book, which should always be about you, and made of stained paper, as you ought not to rub out. When it is full, take another, for these are not things to be rubbed out, but kept with the greatest care; because forms and motions of bodies are so infinitely various, that the memory is not able to retain them; therefore preserve these sketches as your assistants and masters.