I can remember clearly that in the course of the winter of 1895 we spoke several times in S. W.'s presence of the forces of attraction and repulsion in connection with Kant's "Natural History of the Heavens"; we spoke also of the "Law of the Conservation of Energy," of the different forces of energy, and of the question whether the force of gravity was perhaps a form of movement. From this talk S. W. had plainly created the foundation of her mystic system. She gave the following explanation: The natural forces are arranged in seven circles. Outside these circles are three more, in which unknown forces intermediate between energy and matter are found. Matter is found in seven circles which surround ten inner ones. In the centre stands the primary force, which is the original cause of creation and is a spiritual force. The first circle which surrounds the primary force is matter which is not really a force and does not arise from the primary force, but it unites with the primary force and from this union the first descendants are the spiritual forces; on the one hand the Good or Light Powers, on the other the Dark Powers. The Power Magnesor consists most of primary force; the Power Connesor, in which the dark might of matter is greatest, contains the least. The further outwards the primary force streams forth, the weaker it becomes, but weaker too becomes the power of matter, since its power is greatest where the collision with the primary power is most violent, _i.e._ in the Power Connesor. Within the circles there are fresh analogous forces of equal strength but making in the opposite direction. The system can also be described in a single series beginning with primary force, Magnesor, Cafor, etc., proceeding from left to right on the scheme and ascending with Tusa, Endos, ending with Connesor; only then the survey of the grade of intensity is made more difficult. Every force in the outer circle is combined from the nearest adjacent forces of the inner circle.