We appreciate Tipper's (2003) recognition of the importance and usefulness of graphical applications in granulometry. His assertion that Gaussian plotting positions can be more accurately determined in terms of an inverse Gaussian distribution function rather than our (Balsillie et al. 2002) nth order transcendental polynomial solution is noted. Keeping in mind that our plotting program is intended primarily as a visualization tool for sediment grain-size distributions, it should be noted that on a plot filling letter-size (8 ½″ × 11″) paper, any variability arising from use of the polynomial approach lies well within the width of a fine...

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