It is these canons of decency, after all, that give the librarian his sleepless nights, not only because they are so frequently confounded with canons of morality, but because, as we have already seen, they are arbitrary and variable. Consider the one case of French fiction. Mr. Wister has told librarians that all subjects are “fit for fiction.” This is interesting as an academic thesis, but when the French proceed to act upon it, the Anglo-Saxon catches his breath. Books, like men, when they are in Rome must do as the Romans do, and whatever may be proper in Paris, an American public library is justified in requiring its books to respect American prejudices. This is true, at any rate, of books in the English language, even if they are translations from a tongue whose users have other customs and other prejudices. But how about these books in the original? Can we assume that books in the French language are for Frenchmen and that our censorship of them is to be from the French and not the American point of view? Or shall we hold that they are to be read wholly or in part by persons whose mother-tongue is English and whose ideas of the proprieties are Anglo-Saxon? And shall we bear in mind also that the reading public of a work of French fiction excludes in France the “young person” of whom the American library public is largely made up? This is only one of the perplexing questions that confront the American librarian in this field. Every one must struggle with it for himself, having in mind the force and direction of his own local sentiment; but few public libraries are treating it consistently and systematically. Probably, however, many librarians are placing on open shelves books in foreign languages, whose translations into English they would be inclined to restrict. In some cases, of course, appeal to a wholly foreign group of readers, with their foreign point of view, may be assumed, as in the case of a Russian collection on the East Side of New York; though even here it is a question of whether this is not a good place to prepare these readers for a change in library “folkways”--to use Professor Sumner’s expressive word.