If the student is to succeed in testing the value of arguments, he must ever have “at the tip of his tongue” his knowledge of the distribution of the terms of the four logical propositions. With this in view the following schemes are offered: I. _Subject_ _Predicate_ A distributed undistributed E distributed distributed I undistributed undistributed O undistributed distributed II. A distributed undistributed O undistributed distributed E distributed distributed I undistributed undistributed III. A All S is P └─┘ E No S is P └─┘ └─┘ I Some S is P O Some S is not P └─┘ Referring to scheme II it may be observed that A and O contradict each other; i. e., where A is distributed O is undistributed and vice versa. A similar relation exists between E and I. In scheme III the bracket └─┘ under the symbol indicates the term which is distributed. IV. As a fourth scheme a “key word” might be adopted. Any of these three might be used: (1) saepeo, or (2) asebinop, or (3) uaesneop. The significance of “saepeo” is this: “_s_” stands for _subject distributed_, “_p_” for _predicate distributed_, “_a_” “_e_” “_o_” for the _logical propositions_ where any distribution occurs. Putting the letters together gives this: subject distributed of propositions A and E, predicate distributed of propositions E and O. Similarly, “asebinop” stands for this: “_as_,” _a_ distributes its _s_ubject; “_eb_” _e_ distributes _b_oth; “_in_,” _i_ distributes _n_either; “_op_,” _o_ distributes the _p_redicate. In the coined word “_uaesneop_” appear six letters which compose “saepeo,” and the letters have the same significance. The two additional letters, u and n, stand for universal and negative. The interpretation of the entire word, therefore, is this: “_uaes_,” the _u_niversals _a_ and _e_ distribute their _s_ubjects; _neop_, the _n_egatives _e_ and _o_ distribute their _p_ redicates. It seems to me that the last word is the most helpful as it emphasizes the two facts which are the most used; namely, (1) Only the universals distribute their subjects; (2) Only the negatives distribute their predicates. If the student will visualize “_uaesneop_” so thoroughly as never to forget it, he will not experience difficulty in determining the distribution of the terms of the four logical propositions. =9. OUTLINE.= LOGICAL PROPOSITIONS. (1) The nature of logical propositions.