Please report any errors to me at pearce@mathcs.sjsu.edu. Thanks.

Page 172: missing ')' in definition of count-down:

   (define (count-down n)
             (do ((i n (- i 1)))      ; declaration
                 ((< i 0) 'blast-off!)   ; exit clause
                 (display i)      ; body
                 (newline)))      ; body