Laboratory dog plethysmograph, tan in color. Machine resembles iron lung and was designed to determine lung capacity in anesthetized dogs. Machine consists of long cylindrical tank where dog would have been placed, mounted on six metal legs with attached wheels. Tank has two rectangular windows and metal opening on end that closes with two large metal handles. There are four circular openings on end of tank, likely where tubing would have attached. Tank contains wooden rack and electric heating pad.
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Notes:
This laboratory dog plethysmograph was created between 1950 and 1990 and was used for dog breathing research at the Harvard T. H. Chan School of Public Health. It was donated to the Warren Anatomical Museum by the Harvard T. H. Chan School of Public Health's Department of Environmental Health in 2015.