10379. The spirits of that earth appear above, in the plane of the head toward the right; for all spirits are known by their situation in respect to the human body, which is the case because the universal heaven corresponds to all things of man. These spirits keep themselves at a distance, because their correspondence is not with the externals of man, but with his interiors. Their action is into the left knee, a little above and below, with a certain undulatory vibration that is very sensible, which is a sign that they correspond to the conjunction of natural and celestial things. For the feet correspond to natural things, the thighs to celestial things, thus the knee to their conjunction.