977. In the case of an animate body, these fields have the character of invisible effluences around people, which are such that even if they were explained, no one would understand. This is quite evident in nature from experience with an imperceptible emanation, the existence of which is established by so many documented records.
977. In the animal body these spheres are represented by the invisible spheres surrounding men, which are such that even if the fact were explained, no one could understand it. From experience this is very evident in nature from the insensible perspiration which is confirmed by so many proofs and experiences.
977. In corpore animali repraesentantur istae sphaerae per sphaeras circum homines inconspicuas, quae tales sunt ut nemo id si exponeretur intelligere potest, quod admodum evidens est in natura ab experientia, a perspiratione insensibili tot documentis et experientiis confirmata.