Barcroft manometric apparatus by M. Dixon and K.A.C. Elliot, 1930
Barcroft manometric apparatus with respirometer as modified by M. Dixon and K.A.C. Elliot, 1930
Barcroft manometric apparatus with respirometer as modified by M. Dixo n and K.A.C. Elliot, 1930
Barcroft manometric apparatus with respirometer as modified by M. Dixon and K.A.C. Elliot, 1930
Additional glass component from Barcroft manometric apparatus with respirometer as modified by M. Dixon and K.A.C. Elliot, 1930