Keely
The interetheron consists of three component parts which are true simples, inasmuch as they defied any further analysis at Keely's hands. These three components are the three individualized neutral centers, oscillating and vibrating about a "center of coincidence" set up by their vibratory nodes, which assumes control of them through its affinity for their vibratory nodes. Whether any etheric capsule surrounds any or all of these three component neutral centers as they vibrate and oscillate about the fourth and controlling neutral center of the interetheron, is somewhat in doubt. But since Keely's subdivisions he believed were brought about through vibratory disintegration of the etheric capsules, and he was able to subdivide the sixth subdivision into the seventh, such would appear to have been the case. [Snell Manuscript - the book, INTERETHERIC SIXTH SUBDIVISION]
See Also
center of sympathetic coincidence
Figure 14.07 - Love Principle: Two sympathetic waves expanding from two points have one coincident centering locus
Figure 9.2 - Forces assimilating to and dispersing from Center of Coincidence