Glass Case Filled With Oxygen Newest Medical Device. A sealed glass room has been installed at Guy's. London's most famous old hospital, for the treatment of patients with oxygen. The room is kept filled with air containing double the amount of oxygen present in normal atmosphere. Special arrangements also providing for absolute purity of the air within the "show case". Note lock on door to prevent accidental opening and contamination.

Underwood & Underwood · [ca. February 1924]

[Information from item housing] Liquid Air