|Extracting the Essence of Power|
|Author:||Praetorius of Verditius|
Extracting the Essence of Power is a work written in 998 by Praetorius of Verditius. It is an uncharacteristic work in that it deals with the subject of extracting raw vis from various sources, including human bodies but also from animals and unliving things and places. As such, while the chapter on removing vis from human remains is typically ghoulish yet cheerfully described, the other sections of the work are highly readable even by the delicate.