I have said that I consider the connection between Logic and Psychology to be but slender, although not unimportant. The amount and nature of this connection would reward a careful consideration. There would be considerable difficulty in seeing any connection at all between the Aristotelian Syllogism and psychology, but for the high-sounding designations appended to the notion and the proposition--simple apprehension and judgment--of which I fail to discover the propriety or relevance. I know that Grote gave a very profound turn to the employment of the term "judgment" by Aristotle, as being a recognition of the relativity of knowledge to the affirming mind. I am not to say, absolutely, "Ice is cold"; I am to say that, to the best of my judgment or belief, or in so far as I am concerned, ice is cold. This, however, has little to do with the logic of the syllogism, and not much with any logic. So, when we speak of a "notion," we must understand it as apprehended by some mind; but for nearly all purposes, this is assumed tacitly; it need not appear in a formal designation, which, not being wanted, is calculated to mislead. * * * * * [APPLIED OR DERIVATIVE SCIENCES.] With these remarks on the two fundamental sciences of our group, I now turn to the _applied_ or _derivative_ sciences, wherein the great controversies stand out most conspicuous, which, in fact, exist for the purpose of contention--Ontology and Ethics. These branches were in request long before the mother sciences--psychology and logic--came into being at all. They had occupied their chief positions without consulting the others, partly because these were not there to consult, and partly because they were not inclined to consult any extraneous authority. By Ontology we may designate the standing controversies of the intellectual powers--perception, innate ideas, nominalism _versus_ realism, and noumenon _versus_ phenomenon. I am not going to pronounce upon these questions; I have already recommended the alternative mode of approaching them under systematic psychology and logic; and I will now regard them as constituents of the fourfold enumeration of the metaphysical sciences.