I am fascinated to notice that in Chapter 17, amazement only occurs in companionship with confusion.  This is a use of “a-” prefix 1 – towards and therefore intensifier of the sensation of being in a maze.

• 16.036 in amazement.
• 17.009 with amazement and confusion.
• 17.042 Amazement and confusion fell upon them all.

“amaze, v.” OED Online. Oxford University Press, March 2015. Web. 18 May 2015.