1900s, Basal metabolism, Photograph Closed Circuit Respiration Apparatus, 1909 May 26, 2013 Richard Johnston Leave a comment Closed circuit respiration apparatus for measuring BMR, 1909. F.G. Benedict. Taken from: The Development of Methods for Determining Basal Metabolism of Mankind Carpenter, Thorne M. The Ohio Journal of Science. v33 n5 (September, 1933), 297-314