The typology of adult education offered in the October 1988 issue of "Lifelong Learning" examined a number of classifications, including the Bryson scheme (1936) and the Grattan categories (1955). Since the publication of that article, suggestions have been made for additions to the typology "tree" proposed in the article. The typology categorizes adult education by its "content-purpose"; that is, the general content type that suggests its purpose. The six major limbs of this tree represent the major types of adult education: liberal, occupational, self-help, compensatory, scholastic, and social action. Several of these categories have subcategories. Self-directed learning is part of the roots of the tree, since all adult education is clearly institution based. The focus in this revision is on social action and its political dimension. Social action is, by definition, political, and social action clearly implies an agenda for social (political) change. The tree is to be seen as part of a long tradition of categorizing the field of adult education; the image of a tree is appropriate since the effort is always growing and changing. (KC)