It is evident also that in all the figures, whenever a deduction does not result, if both the terms are affirmative or negative nothing necessary follows at a all, but if one is affirmative, the other negative, and if the negative is assumed universally, a deduction always results relating the minor to the major term, eg if A belongs to every or some, and belongs to no C; for if the propositions are converted it is necessary that does not belong to some.