Anchor: One or two of those powders introduced into the full bottle of medicine would effectually precipitate the strychnine, as the book describes, and cause it to be taken in the last dose. 
Entailed: Some of the powders had an effect on strychnine.
Contradiction: The powders in the bottle would have no effect on the strychnine.
Contradiction: 4 people are answering questions about a magazine.
Contradiction: The rebel demon!
Contradiction: I know you will never tell us what passed between you.
Contradiction: Crowd at an outdoor event