D4 — second tone
288.00 Hz · 9:8 tone
The root point closes the seven displayed steps with D4 at 288 Hz, the 9:8 tone ratio over C4 = 256 Hz. The lower placement is an editorial grounding metaphor, and the ratio should not be mistaken for a Pythagorean prescription for the pelvic floor or a clinical intervention.
Point 7 of 7 in Pythagorean Harmonic Body
Cross-tradition overlaps
No overlapping points are registered for this point.
Sources
Iamblichus, Life of Pythagoras (primary_canonical)
Chapters XV and XXV discuss musical education, purification, and the ordering of the soul; chapter XXVI recounts the discovery of harmonic ratios and identifies diapason, diapente, and diatessaron. The text supports music-and-ratio doctrine, not a seven-point body coordinate map.
Walter Burkert, Lore and Science in Ancient Pythagoreanism (scholarly_modern)
Burkert provides modern historical analysis of Pythagorean number, music, cosmology, and the limits of later doxographic accounts; it is used here to keep the body projection distinct from ancient evidence.