His work, which appears to have suffered much from the ignorance of transcribers, consists of two books: in the first, which contains twenty-three chapters, after proving the utility of physiognomy, he lays down the general principles of the science; he speaks of the shape of the head, the colour of the hair, of the forehead, the eyes, the ears, the nose, the manner of breathing, the sound of the voice, &c.; in the second book, which consists of twenty-seven chapters, he goes on to apply the principles he had before laid down, and describes in a few words the characters of the courageous man, the timid, the impudent, the passionate, the talkative, &c.