But I'll know by the day after to-morrow." "How so ?" "I intend to spend to-morrow night there." "Oh!" said the Englishmen, "would you like to have me go with you ?" "With pleasure, my lord.

Only, unfortunately, that is impossible." "Impossible, oh!" "As I have just told you, my dear fellow." "But why impossible ?" "Are you acquainted with the manners and customs of ghosts, Sir John ?" asked Roland gravely.
"No." "Well, I am.

Ghosts only show themselves under certain conditions." "Explain that." "Well, for example, in Italy, my lord, and in Spain, the most superstitious of countries, there are no ghosts, or if there are, why, at the best, it's only once in ten or twenty years, or maybe in a century." "And to what do you attribute their absence ?" "To the absence of fogs." "Ah! ah!" "Not a doubt of it.

You understand the native atmosphere of ghosts is fog.

Scotland, Denmark and England, regions of fog, are overrun with ghosts.