 What made Captain Hannah want to give the narrator a black eye?
Captain Hannah climbed painfully down from the Delta Crucis , hobbled across the spaceport to where Beulah and I were waiting to greet him and hit me in the eye. Captain Hannah had lost the Look of Eagles. I only drink rhial when I've been exposed to Captain Hannah. "I'll tell you about it first, and then I'll black your other eye," he decided. "You'll remember that I warned you that we should take some marocca out into space and solve any problems we might find before committing ourselves to hauling a full load of it?" asked Captain Hannah. "Oh," said Captain Hannah in quiet tones of controlled desperation, "it was very simple.
 Because Captain Hannah's transportation of the marocca plants was frustrating and gruesome.
 Because the narrator offered no help in transporting the marocca plants.  Because the welts on Captain Hannah were angering the captain.  Because the narrator made an unfair deal to transport the plants to Gloryanna III.  Because Captain Hannah's transportation of the marocca plants was frustrating and gruesome.