results of his merit or demerit--being at one time crowned a king, having at another time his head cut off, and so on--is possible in so far as there is created for him another body in every way resembling the body resting on the bed. The case of the white shell being seen as yellow, explains itself as follows. The visual rays issuing from the eye are in contact with the bile contained in the eye, and thereupon enter into conjunction with the shell; the result is that the whiteness belonging to the shell is overpowered by the yellowness of the bile, and hence not apprehended; the shell thus appears yellow, just as if it were gilt. The bile and its yellowness is, owing to its exceeding tenuity, not perceived by the bystanders; but thin though it be it is apprehended by the person suffering from jaundice, to whom it is very near, in so far as it issues from his own eye, and through the mediation of the visual rays, aided by the action of the impression produced on the mind by that apprehension, it is apprehended even in the distant object, viz. the shell.--In an analogous way the crystal which is placed near the rose is apprehended as red, for it is overpowered by the brilliant colour of the rose; the brilliancy of the rose is perceived in a more distinct way owing to its close conjunction with the transparent substance of the crystal.--In the same way the cognition of water in the mirage is true. There always exists water in connexion with light and earth; but owing to some defect of the eye of the perceiving person, and to the mysterious influence of merit and demerit, the light and the earth are not apprehended, while the water _is_ apprehended.--In the case again of the firebrand swung round rapidly, its appearance as a fiery wheel explains itself through the circumstance that moving very rapidly it is in conjunction with all points of the circle described without our being able to apprehend the intervals. The case is analogous to that of the perception of a real wheel; but there is the difference that in the case of the wheel no intervals are apprehended, because there are none; while in the case of the firebrand none are apprehended owing to the rapidity of the movement. But in the latter case also the cognition is true.--Again, in the case of mirrors and similar reflecting surfaces the perception of one's own face is likewise true. The fact is that the motion of the visual rays (proceeding from the eye towards the mirror) is reversed (reflected) by the mirror, and that thus those rays apprehend the person's own face, subsequently to the apprehension of the surface of the mirror; and as in this case also, owing to the rapidity of the process, there is no apprehension of any interval (between the mirror and the face), the face presents itself as being in the mirror.--In the case of one direction being mistaken for another (as when a person thinks the south to be where the north is), the fact is that, owing to the unseen principle (i. e.