IAPSOP (International Association for the Preservation of Spiritualist and Occult Periodicals), 2026-10-08
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1. Charles Hallock, Luminous Bodies: Here and Hereafter (The Shining Ones), 1906 [web: http://iapsop.com/ssoc/1906__hallock___luminous_bodies.pdf; also archive.org/details/luminousbodieshe00hallrich] -> files/hallock-1906-luminous-bodies.pdf
Reprints the Open Court correspondence. "From an Astronomer": "Mr. Hallock received the following interesting communication from Prof. Edgar L. Larkin, Director of the Lowe Observatory, California":
"Dear Sir: I read your article with interest. I have been writing for months in the papers that nothing exists but electricity. It is a matter and may assume protean forms. Of course our spiritual bodies are merely one phase of electricity, souls, minds, spirit also every entity in existence. Thousands of verses not only in the Hebrew, but in many other Oriental scriptures, are cleared up by this cardinal fact. Many mystical facts in 'spiritualism' are also explained by electrical hypothesis. I allude to 'refined' matter in my book 'Radiant Energy.'" (text layer, line order restored; the OCR scrambled the column; pdf p. not recorded) - Bearing on claim 1: Larkin himself points to the "refined matter" of Radiant Energy (the corpuscles of pp.17-19, 177-178, "electricity in its ultimate refinement") as the basis of his electrical account of spirit. This is his own reading of what the book's corpuscle principle means. Priority 1.
2. The Progressive Thinker (Chicago spiritualist weekly), 24 Sep 1904 [web: http://iapsop.com/archive/materials/progressive_thinker/progressive_thinker_v30_n774_sep_24_1904.pdf] -> files/progressive-thinker-1904-09-24.pdf
A correspondent (column OCR heavily interleaved) discusses Larkin's newspaper statements (from the Chicago Examiner, per Google snippet) that "human mind is made of electricity, and electricity is matter" and "no entity exists but electricity", and a "universe of corpuscles". Text partly garbled; quote only with care.
3. The Progressive Thinker, 31 Mar 1906 [web: http://iapsop.com/archive/materials/progressive_thinker/progressive_thinker_v33_n853_mar_31_1906.pdf] (not downloaded): book notice "Radiant Energy and Its Analysis ... By Prof. Edgar L. Larkin, director of Lowe Observatory" (Google snippet). Shows the book was sold to the spiritualist readership.
Bearing
How the book's corpuscle principle was received: in the spiritualist press as a scientific basis for an electrical soul (characterization of those readers; they had an interest in that reading). The physics claim (claim 1) is unchanged; this is the history of its reception.