In the 1930’s chemists and pharmacists KNEW stuff about healing herbs. It must have been a complex training. This is what they had to know about healing herbs – then.
Click to make this map bigger…it is full of interesting detail.
This is a lost world now. It continues “underground” as more and more people become disillusioned with modern drugs. Drugs produced by the Pharmaceutical Industries, often using the same ingredients now “copyrighted”, are the only thing that Pharmacists/Chemists know anything about now.