The phrase "preceding chapter" refers to the chapter that comes before the current one. It means the chapter that was read or discussed before the one you are currently on. Full definition
But we may profit from still another brief summary of the relevant affirmations of process thought, about which so much has been said in preceding chapters. (religion-online.org)
Chapter 16 — Conclusion highlights key conclusions and implications of preceding chapters, as follows: (cxoadvisory.com)
These characters load up on the Red Book entries, each of which precedes the chapters in which old friends and acquaintances first appear, then bring their families, their histories, their successes, their failures, their questions, and their desires to a relationship - altering, score - settling, and completely unforgettable reunion weekend. (bookbrowse.com)