I began to apply them one by one to my own late experience, and unconsciously to try to fit them in turn to the present case.
The effect of this brooding was that I was, despite my own will, struck by the similarity of circumstances bearing on my visitor, and the conditions apportioned by tradition and superstition to such strange survivals from earlier ages as these partial existences which are rather Undead than Living--still walking the earth, though claimed by the world of the Dead.

Amongst them are the Vampire, or the Wehr-Wolf.

To this class also might belong in a measure the Doppelganger--one of whose dual existences commonly belongs to the actual world around it.

So, too, the denizens of the world of Astralism.

In any of these named worlds there is a material presence--which must be created, if only for a single or periodic purpose.