Cureton's Physical Fitness Testing (1)
Caption on back reads: "Cardiorespirograph is used with breath holding equipment to determine respiratory reserve. The anoxia photometer measures depletion of the arterial blood. The graphical record shows where the first deep involuntary effort is made and how well the pulse wave is sustained during effort."
Found in RS: 39/2/20, Box PHE 2, Folder PHE 2 1946-65
Negative Number: 14180, Record Series 39/2/22.