7 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 1343.57 Ambiguous Referents

  Ambiguous Referents are the class of objects, concepts, and phenomena whose ontological status within the Tower is defined by their inherent…

• MS 2379.47 Librarian Psi

  Librarian Psi is the designation borne by the officer of the Librarians who holds custody of the Ψ series: the survey record, the quarantine…

• MS 5937.29 Mimetic Resonance Lamps

  Mimetic Resonance Lamps are a Class-IV illumination device designed to absorb and replicate the ambient ontological "hush" of a space, there…

• MS 4103.36 SC-44

  SC-44 is a specialized classification designation under the Third Concordance, denoting "Spectrally-Contingent materials of the forty-fourth…

• MS 7899.01 Sigma Array Incident
• MS 8852.33 Vibroscopic Sensors

  Vibroscopic sensors are a class of passive monitoring devices, documented in the annex to the Twelfth Concordance, that detect and catalogue…

• MS 6990.55 Weighing Floor