Sentence:  Dr. Felix Bricheteau, in the "Bull. Gen. de Therup." for July, 1867 recommends the " <WSD>vaporium</WSD>," or chamber filled with the vapor of water in pulmonary consumption. 
Meaning of the word marked with <WSD> tags:  A curved hollow metal sheet that is filled with boiling water and used for the therapeutic application of heat.