 If the highest genus of the category of quantity is a form, the seven species Aristotle enumerates (line, surface, solid, time, place, number, and speech) clearly are not. Alyngton tries to meet this difficulty by reformulating the notion of quantified-thing (quantum), and by proposing a method for deducing the seven species of quantity from the highest genus (a sort of sufficientia quantitatum). He considers the seven species Aristotle lists not as quantitative forms, but as the most proper and primary bearers of the quantitative nature, revealed by the highest genus of the category. In fact, encouraged by the Aristotelian distinction between strict and derivative quantities (Categories 6, 5a38–b10), like Burley, he distinguishes two different ways of being quantified: by itself and accidentally (per accidens). Only the seven species of quantity would be quanta by themselves, while any other quantum would be such per accidens, and so indirectly, because of its connection to one (or more) of the seven quanta per se (In Cat., cap. de quantitate, fol. 116r).