Book excerpt: Volume 5 lists more than 800 pharmacologically tested simple and complex drugs, including plant and mineral substances, with a thorough description of their application and effectiveness. For each one, he described their pharmaceutical actions from a range of twenty-two to thirty possibilities, including resolution, astringency and softening, and their specific properties according to a grid of eleven types of pathological conditions, diseases. This volume not only contains an index of the contents based on healing properties of the 800 natural pharmaceuticals, but in addition a comprehensive 400 page index of all five volumes based on the names of the natural healers and what they heal.