Barks trivia and quotes quiz

[Tryg Helseth]

At 05:08 PM 6/28/2003 +0200, you wrote:
>Spotted Barks stories with hypnotism:
>
>Still, there are at least two other stories. (One with Gyro, and
>one with Scrooge.) Who knows them? And who knows more?

I remember a Gyro story that featured Donald Duck where Gyro and Don
  end up stranded on an island.  Gyro hypnotizes Donald in order to get
  him to gather features to be shot out of a dead volcano cone with
homemade gunpowder.  Was either in a Gyro Gearloose comic or
a giant, but I don't remember the title.

Tryg

---
"Hot transistors!  Of course!
Sulphur is at hand,
charcoal is in the sand,
perhaps I can find the other chemical!"
                 -Gyro Gearloose