way that the question concerning the ground-end-definition is addressed to this “in between” itself, and thus goes through and beyond it. We would therefore do best to set out from this “in between” as it was presented to us in our last investigation (§3). What takes place in an a priori metaphysics, whether of the object or of the act, is manifestly, in the highest degree, a deduction of the grounded, directed, and determined from its ground, end, and definition. This ground, end, and definition,