Summary
This communication gives a description of the method of Lewis, who isolated 1–hyoscyamin
from Amanita muscaria L., collected in South Africa. Our experiments showed, that no 1–hyoscyamin or atropin
was present in the Dutch specimen of this mushroom. The other quaternary bases already
found, as muscarine, choline and muscaridine were found with this method. Lewis did
not mention the presence of these substances in the African mushrooms.
