An encyclopaedia? A dictionary? An almanac? An anthology? A lexicon?
A treasury? A commonplace? An amphigouri? A vade-mecum?
Well... yes. Schott's Original Miscellany is all of these and, of course, more.
Schott's Original Miscellany is a snapper-up of unconsidered trifles. Its purpose is to gather the flotsam and jetsam of the conversational tide. Importantly, Schottt Original Miscellany makes very few claims to be exhaustive, authoritative, or even practical. It does, however, claim to be essential. It is, perhaps, possible to live one's life without Schott's Original Miscellany, but it seems a curious and brave thing to attempt.