0780 Ghosts
-0780.1 Those of the long dead
–0780.11 Those that have forgotten quite what they ever were
—0780.111 Those who died at sea, having long slow conversations with generations of whales
—0780.112 Those that drift around the plumbing of cities, feeding on snatched words and truck exhaust, only coming out in the fog
–0780.12 Those who know how to do one thing very well, and have been doing it for thousands of years
–0780.13 Renaissance ghosts
—0780.131 Those from the actual renaissance
-0780.2 Those of the recently deceased
–0780.21 Those of the famous or infamous
—0780.211 Those who, having formed an attachment to cameras, have ended up haunting them, causing irritating lens flare and mysterious particles on the sensor
–0780.22 Those who have left a story unfinished
—0780.221 Those who whisper their stories in the ear of people who are falling asleep, and who will not remember on waking
—0780.222 Those who have taken to haunting their last book, in the hope of forcing more ink out of the page
–0780.23 Those who died singing and have not stopped since
–0780.24 Those whose spookily ernest warnings about dangerous rocks, caves or mountainsides have attracted a whole new slew of visitors to perilous locations.
–0780.25 Ghosts trying to dodge each other in corridors, having not worked yet that they can go straight through
–0780.26 The moderately long-dead, riding around on ceiling fans, having been told that this will make them look more recently-deceased
-0780.3 Those of animals, birds or insects
–0780.21 The ghosts of mice
–0780.211 Those who congregate in great friendly invisible groups
–0780.212 Those whose rushing around and squeaking in million-strong flocks is sometimes mistaken for the North wind, but which can be distinguished by an astute observer of cat behaviour
–0780.22 Ghosts of slow lorises and bush babies that have faded to nothing more than huge translucent eyes
–0780.23 Cockroach ghosts
—0780.241 Those that are the source of unexplained crunches underfoot
-0780.4 Those of objects
–0780.41 The wandering ghosts of planets that have fallen into another sun, and that now cluster round G-type stars like woebegone moths
–0780.42 Ghosts of useful objects that have been destroyed, hanging around tutting at humanity
-0780.5 Those of concepts or other intangible things
–0780.51 Ghosts of Christmases or other celebrations
—0780.511 Those ghosts of Christmas who get together for a jolly Christmas lunch, consuming the recently-released souls of hapless turkeys and leaving them double-ghosted.
–0780.52 Ghosts of disproved theories, hanging round universities, trying to get back in.
Those that drift around the plumbing of cities, feeding on snatched words and truck exhaust, only coming out in the fog