27: Spirilla:  "In order to examine the construction of the atom, a space is artificially made, then, if an opening be made in the wall thus constructed, the surrounding force flows in, and three whorls immediately appear, surrounding the "hole" with their triple spiral of two and a half coils, and returning to their origin by a spiral within the atom; these are at once followed by seven finer whorls, which following the spiral of the first three on the outer surface and returning to their origin by a spiral within that, flowing in the opposite direction form a caduceus with the first three.  Each of the three coarser whorls, flattened out, makes a closed circle; each of the seven finer ones, similarly flattened out, makes a closed circle.  The forces which flow in them, again, come from "outside," from a fourth-dimensional space.  Each of the finer whorls is formed of seven yet finer ones, set successively at right angles to each other, each finer than its predecessor; these we call spirillae.
"Each spirilla is animated by the life-force of a plane, and four are at present normally active, one for each round.  Their activity in an individual may be prematurely forced by yoga practice."—Occult Chemistry, p. 28.