medianity

He tells me that he has "written other works waiting to be published, obtained by means of other medianity."

One of Signor Agresta's four daughters […] suffered from strange movements in the right arm […] but a friend […] told him that he himself was inclined to attribute these movements to medianity. Signor Agresta thereupon read up some spiritistic works, and then began experimenting with Gilda.