they so scantily cover. 'The great and golden rule of art (says he) is this: that the more distinct and sharp and wiry the bounding line, the more perfect the work of art; and the less keen and sharp this external line, the greater is the evidence of weak imitative plagiarism and bungling: Protogenes and Apelles knew each other by this line. How do we distinguish the oak from the beech; the horse from the ox, but by the bounding outline? How do we distinguish one face or countenance from another, but by the bounding line and its infinite inflexions and movements? Leave out this line and you leave out life itself: all is chaos again, and the line of the Almighty must be drawn out upon it before man or beast can exist.'
These abominations—concealed outline and tricks of colour—now bring on one of those visionary fits to which Blake was so liable, and he narrates with the most amusing wildness sundry revelations made to him concerning them. He informs us that certain painters were demons—let loose on earth to confound the 'sharp wiry outline,' and fill men's minds with fears and perturbations. He signifies that he himself was for some time a miserable instrument in the hands of Chiaro-Scuro demons, who employed him in making 'experiment pictures in oil.' 'These pictures,' says he, 'were the result of temptations and perturbations labouring to destroy imaginative power by means of that infernal machine called Chiaro-Scuro, in the hands
