Bio-Assay on a General Curve

In the discussion of bio-assay we have used the growth curve' where others have used the probability integral.Some of the treatment may be given in terms of a general function F, and for the study of the differences which might be introduced by different laws of biological reaction of various animals to various biologicals such a discussion is not without importance.Let it, then, be supposed thatin which a is a coefficient of homogeneity and y is the 50% point for x so that F(O) = 0.For the growth curve and the probability curve we have,