To Understand the Song of Birds (Spell)

From Egyptian Secrets of Albertus Magnus, Joseph H. Peterson edition:

To Understand the Song of Birds.

Take the tongue of a vulture, lay it for three days and three nights in honey, afterward under your tongue, and thus you will understand all the songs of birds.

Timeline of related events

1900

1950

In this decade: Publication of The Book of Forbidden Magic (lists this spell)