It was only after I had finished this volume that I came across the book by Barry Bames, Scientific Knowledge and Sociologi- cal Theory (Routledge and Kegan Paul). I am in full ag,reement with certain ideas expounded in that book, although it also contains others that I must object to. I have decided to make some remarks about them at the beginning of my book, as I believe that they may prove useful by way of int,roduction to the English version of this volume. I hope that anyone who has professional reasons to turn his attention to this volume will have acquainted himself with Scientific...