The Motion occasioned in a Man, by the Presence of any Object, may be produced either mediately or immediately; if it arise immediately, the Person who moves, in the first Place, casts his Eyes towards the Object; his Sight being the best able of his Senses, to discover what it is; letting his Feet at the same time stand immoveable, and turning his Thighs, Haunches, and Knees, the same Way with his Eyes: Thus, in every Rencounter of this kind, remember to be very curious, and exact in remarking the most minute Motions, and Gestures that arise.