Abstract: An additional line of correlation lor mass transfer is introduced into the "Generalized Correlation Diagram for Semi-experimental Pressure Drops in Packed Towers" which was published by the same anther. At an earlier date, the diameter of the tower, the pressure drop, and the packed height can be worked out with the proposed diagram. This modified diagram mav serve also as a "Generalized Capacity Diagram for Packed Tower" for design work as well as for operational purposes.