The examples of foreshadowing in paragraph nine are the following:
"[...] it was the beginning of the experience that in some inexplicable way marked the end of innocence."
"[...] it involved some secret, secret thoughts of one of the Harris boys across the yard."
Foreshadowing is the literary effect in which the author suggests certain development of events that might happen later in the story. As a result, it motivates the reader to continue the account and prepares him or her for future outcomes of the text.