Sentence:  Is it not to be regretted that the term eudiometry and eudiometer should be applied exclusively to the art of determining the quantity of oxygen in the air and the instruments for that purpose? Would not the terms oximetry and <WSD>oximeter</WSD> be more appropriate?—Tr[anslator]. 
Meaning of the word marked with <WSD> tags:  A device that measures the quantity of oxygen in something, particularly air in the atmosphere.