present invention this is significant since lower concentrations of sizing agents could reduce machine deposits in commercial applications furnish and wet end additive concentrations are identical to those outlined in connection with example i and the pcc pigment was surface treated with 7 50 parts starch 100 parts complexed pigment the complexed starch contained 3 0 soluble soap table 7______________________________________akd conc hst sizing secs lb ton pcc initial 4 wks ______________________________________1 0 27 4 1 1 5 25 4 11 82 0 26 3 427 3693 0 26 0 644 583______________________________________ the data in table 7 indicate that a 33 reduction in akd size produced an initial hst sizing value of 427 seconds moreover the sizing value remained substantially stable after four weeks 369 seconds this experiment demonstrated that good water repellency with reduced use of internal size can be achieved with the surface treated pigments of the present invention in another experiment a rhombohedral pigment albaglos s supplied by specialty minerals inc was evaluated this pigment displayed a mean particle diameter of 0 5 microns untreated and surface treated pigments were compared in a handsheet study with target filler loadings of 5 25 pearl corn starch from a e staley was complexed with 3 0 soluble soap furnish and wet end additives were identical to those outlined in previous experiments the data are summarized in table 8 table 8______________________________________pigment hst sizing secs treatment pcc initial 4 wks ______________________________________no 5 4 326 296yes 5 5 334 300no 11 0 222 194yes 10 9 280 270no 16 4 85 53yes 15 5 326 301no 22 0 9 7yes 19 4 347 327no.