 There is one significant complication. In his On Division, Boethius distinguishes between the division of a genus and the division of a whole (877c-d, see also In Cic. top. 331.18–19). But then under his treatment of the ways to divide wholes, he notes that one way to divide a true whole is to divide a universal into its subordinate individuals (887d). That a universal can be a true whole will matter below when we try to uncover the properties that differentiate one kind of part-whole relation from others (Section  3.3).  