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Irving R. Roth, M.D.
JAMA. 1918;70(20):1455-1456. doi:10.1001/jama.1918.26010200001009.
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It is with the realization of the gravity of an improperly drained empyema and with the hope of facilitating such drainage, that I present this device.

It consists essentially of two parts: (1) an elevated canvas bed, spanned across the bed frame, with an opening in the canvas to permit the passage of a tube from the pleural cavity through it into the pus bottle below (Fig. 1), and (2) a series of air-tight bottles and tubes below the canvas bed (Fig. 2).

Bottle A (Fig. 3) is an 8-ounce, air-tight, pus bottle communicating with the tube in the pleural cavity. From Bottle A, air is exhausted by means of Bottle B, which is a 2-gallon irrigating bottle in which a vacuum is created by letting water flow out of its spout at the bottom by gravity into Bottle C, which is a 2-gallon plain bottle. When Bottle B is


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