Currently, many efforts are being made to restrict and ban natural medicine. However, the essence of the plants showcased in this facsimile book cannot be prohibited. Even though the illustrations may sometimes appear quite childlike, they reflect the representations of that time and demonstrate a profound knowledge of plants. The specific structure of the plant and its mode of action form, in the language of natural healers, its signature. This means that the plant leaves a trace, an imprint, a "signature" of its own essence in the human body when used. Herbal medicine is clearly a part of natural healing. This, of course, cannot happen without a deep understanding of the mechanisms of the human body and the analogies between the two. Thus, a deep relationship arises between the cause or progression of a disease on one hand and herbal medicine on the other.