Where differential coefficient is either imaginary or real ac cording as function applies either to any imaginary variable sufficiently indicated by referred to the logical deter mination of imaginary, or to any real variable sufiiciently indicated by X referred to the logical determination of real; and where the first complete determination of function by itself constitutes the only variety necessary and sufficient Whether to difierentiate the identity of function in my Science {function} Analysis, or to integrate the difference Of function in Kant's enumeration of all moments of a Single cognition. II Determination of the relation Of Science {function} Analysis to Logic.