Answer Puzzle 4

Joe Ninety had written (before it was coded):
This equipment will need to reproduce like a bunny to be effective around the world.
The clues were in the name Nine and the sense of the sentence, but also a hint is in the receiving scientist's name Peter Rabbit. The word bunny was coded to produce sleep.
Starting with the word bunny, the reverse-letters shift coding system means each letter was transferred for another one 9 letters anti-clockwise down the alphabet, given that the twenty six letters form a circle A to Z clockwise.
In this manner: b became s
u became l
n became e
n became e again
y became p.
So bunny became sleep and the sentence acquired a different meaning when read as if uncoded.