Ghostology

It did not lessen Septimius's surprise, however, to think that such a singular being was established in the neighborhood without his knowledge; considered as a real occurrence of this world, it seemed even more unaccountable than if it had been a thing of ghostology and witchcraft.

This, as all students of ghostology are aware, has frequently been the case; and it was precisely the case with the ghost seen by the famous Lord Brougham, […]

Experts in ghostology know exactly, where ghosts live, how they behave, how to deal with them, how to make them appear and disappear.