Effects parallel to these are attained at each of the cardinal and inter-cardinal points of the whole circumference, upon the zinc or copper disc, but as usual always reversed. Opposite to the eight intervening spaces, the character of the remote motion is changed. _There_ it is a rotatory motion in a direction the reverse of the rotatory motion shown in figs. 15 and 16. Thus, there exists all round the disc, at a distance of about an inch and a half, a circle of complete repose. Within this the proper, or near, extra-marginal movements of the odometer are manifested: without it, the motions of the second and remote force last described. But to return to the facts mentioned at the beginning of this section. The movements of the odometer over a line of sovereigns, or from a distance towards its centre of gravity, are evidently the consequences of this remote force coming into operation; the long and forcible oscillations caused by which toward or from a remote point override the smaller near extra-marginal, and the super-discal forces of the Od-subject. IV. I have next to deal with the effects obtained by trying the odometer with mineral bodies, in which electric, chemical, or magnetic forces are energizing, or that force on which crystalline structure depends, and with organized bodies in possession of life. In this section, I propose to describe the simple resultants, analogous to the two diametral movements, obtained when the odometer is held over a sovereign. It will be remembered that, of these two, one only manifested itself at a time; and that their meridians were determined by the person of the experimenter. One movement was either in the direction of the mesial plane of his person, or in one parallel to it—namely, the longitudinal oscillations; the other was in a plane at right angles to the first. The corresponding movements of the odometer with the class of bodies now to be considered are rotatory; and two, at least, are always simultaneously manifested—one a clock rotation, the other a versed rotation. These opposite rotations are likewise always manifested on opposite sides or opposite ends of the Od-subject, indicating the development of polarity. Finally, the force of this polarity is such as to render the influence of the person of the experimenter nugatory as to the direction of the forces. Accordingly, if a horse-shoe magnet is laid in any position in reference to the experimenter, clock-rotation is always obtained by holding the odometer half an inch above, and beyond its northward pole; and versed rotation is invariably obtained in like manner at its southward pole. The effect of touching the odometer-finger with the thumb is exactly to reverse the two rotations. I will now describe the individual instances in which these rotations are manifested; or the parts of each Od-subject over which the odometer rotates in opposite directions. CLOCK-ROTATION. VERSED-ROTATION.