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 7254.29 Codex of Unstable Grounds
• MS 0944.60 Department of Latent Ontologies

  Department of Latent Ontologies is a designation applied, at various points in the Tower's administrative history, to at least three non-ide…

• MS 2292.48 High-Frequency Oscillatory (50–200 AdHz)

  The High-Frequency Oscillatory (50–200 AdHz) band is the third of the four calibration ranges recognised by the Tower's acoustic registry, o…

• MS 1018.88 Silent Chronometers