House Systems, Mundane Astrology, and Astrological Techniques. This archival document is the 4th Edition of Mercury Hour (January 1975), an open-forum astrological journal edited and published by Edith Custer. The issue brings together prominent mid-20th-century astrologers to debate chart construction techniques, planetary rulerships, sensitive mathematical points, and practical counseling philosophies. Key technical contributions include Michael Munkasey’s classification of 23 house systems and introduction of the Arcturan system, Dr. James T. Hayes’s critique of cause-and-effect determinism and traditional dignities, Ivy M. G. Jacobson’s guide to L. Edward Johndro’s Birth Locality Charts, Inge Aach’s demonstration of 90-degree dial midpoint analysis using Henry Kissinger’s chart, and Ruth Dewey’s research on the Vertex. Additional discussions cover Carl Payne Tobey’s Astrology of Inner Space, Stephen Arroyo on Mars in Scorpio medical correlations, Zip Dobyns’s announcement of International Astrological Abstracts, and Isabel Hickey’s biographical account of her spiritual astrological practice.

Issue Highlights

Articles:

House Systems – Michael Munkasey

Four Questionable Practices of Astrologers – Dr. James T. Hayes

Excerpt from Foundation of the Astrological Chart – Ivy Jacobson (Johndro Locality Charts)

The Cosmic Structure – Inge Aach (continuation of the Cosmobiology Series)

The Vertex (series continuation) – Ruth Dewey

Discussion:

Carl Payne Tobey’s Astrology of Inner Space (various contributors)

Chart data:

(some in question or incomplete)

Gerald Ford
Muhammed Ali
James Dean
Marlon Brando
Clark Gable
Henry Kissinger

Notable contributors:

Stephen Arroyo (Mars in Scorpio; Polarity Therapy)

Zip Dobyns (formation of International Astrological Abstracts – IAA)

Isabel Hickey (short bio & involvement in astrology)