4 holdings are shelved on this floor. A shared floor records where volumes sit and nothing about what any of them says; these are neighbours, not relations.

• MS 2077.27 Annex δ of the Sixteenth Concordance
• MS 2927.76 Catalogical Velocity
• MS 2913.37 Clarification Edict 709
• MS 3522.30 Hum of the Depths

  Hum of the Depths is an acoustic phenomenon catalogued on Sub-Level 9 of the Western Spire, distinguished by its alleged capacity to transmi…