4324. The correspondence of the heart and lungs, and also of the brain, with the Grand Man has been dealt with already at the ends of chapters. That which has to be dealt with next in accordance with the manner of presentation adopted already is the correspondence with the human external sensory organs, namely the organ of sight or the eye; the organ of hearing or the ear; and those of smell, taste, and touch. But correspondence with sensory activity in general must be discussed first.