The fire completely consumed some of them, but among the survivors, though badly singed around the edges, was a curious book known as the Nowell Codex, which formed part of a volume labeled “Cotton MS Vitellius A XV.” (Robert Cotton, who had collected the manuscripts a century before, categorized his books with the busts of Roman emperors, which sat atop his shelves—hence, “Vitellius.”)

ssociative indexing,

It affords an immediate step, however, to associative indexing, the basic idea of which is a provision whereby any item may be caused at will to select immediately and automatically another. This is the essential feature of the memex. The process of tying two items together is the important thing.