Ambs, E. ( pp. 569, 583) Cell diameter, erythrocyte thickness, population analysis, hemoglobin dissociation curve, size of nucleus, etc., were used as parameters in drawing conclusions as to the functional events of erythropoiesis. Giesinger, E. ( p. 160 ) demonstrated that the copper concentrations in the serum and erythrocytes are about the same. Schnack ( p. 79 ) wrote on iron metabolism, in...