In any work of classification, the selection of standards is, of course, of primary importance. In the budget of the League, absurd results appear at various points as a result of arranging the contents thereof now according to one type of standard (subject-matter, as “Mandates”), now according to another (kind of service, as “Liaison”). Without coördinate and mutually exclusive standards, no classification can be complete or satisfactory.
One or two of the points made above might, it is obvious, be used as indices of classification if not used as grounds of exclusion. That is, if unofficial international organizations are not excluded entirely, as they logically should be, from this study, they might form one of the two classes of international organizations, along with official organizations. Similarly, organizations may be classified as bilateral and multilateral, in accord with the foregoing discussion, as resting upon mere practice or formal convention, as intended for the observance of some principle or for the taking of some overt action, and finally as relying upon national agencies for their operation or possessing agencies of their own.