An African explorer told me recently that the events attending the southward progress of the French through the Sahara and down into Central Africa were the most thrilling and the most important, from the standpoint of world history, among those of recent times. The story of them remains unwritten, except for a few episodes in French that have not been thought worthy of translation into other tongues. Yet in this period how much trivial incident, how much banal reminiscence, has been thought worthy of enshrinement in bulky octavos, selling at four dollars each! The money spent in putting forth the same idle stuff that has oppressed the world for centuries would have supplied great gaps in our catalogues of history, travel and science and have given us vital literature that we may now have lost forever. In fiction, the sin of repetition is largely due to the substitution of imagination for observation. No two actual things are alike and no two events happen in the same way. Observation and accurate description will never result in duplication. But the semi-educated imagination sees always the same things and sees them in the same way; and its use in the writing of fiction results as we have seen. Would that we had, to-day and here, realism like that of Turgenief in his “Memoirs of a Sportsman”--the detailed account of every-day happenings; the hardest thing in the world to write interestingly. When we try it, which we seldom do, we seem to revert at once to the dreary side of life, which doubtless exists but surely not to the exclusion of other things. Turgenief’s book helped toward the emancipation of the serfs. I will not dwell on that, for Mrs. Stowe’s Uncle Tom’s Cabin--a very different sort of book, performed a like office for us. I will rather insist that Turgenief wrote simple, vital descriptive literature; something that you will look far to find in our modern fiction. Our books of reference are full of duplications and omissions. Search the commoner dictionaries and cyclopedias on the library shelves and you will find countless instances of items of information given twice or thrice and others left out altogether--of words entered under more than one form and completely defined under each, while cross-references lead the seeker to nothing at all. After working a good many years on books of this kind I am convinced that the art of making a perfect dictionary or cyclopedia is the art of avoiding duplication and omission. This can not be done until publishers are willing to allow sufficient time to elaborate a plan before beginning work on one of these books. This, so far, has never been done, and the two sins continue to be committed, here as elsewhere. It is doubtless time for our application of these principles to the library. We have not to look far to begin.