Among the millions of events in this world which cross and re-cross one another, remarkable coincidences must often occur; and a case exactly similar to that at the Mazarin Library, happened about the same time in London, at the French Protestant Church, St. Martin's-le-Grand. Many years ago I discovered there, in a dirty pigeon hole close to the grate in the vestry, a fearfully mutilated copy of Caxton's edition of the Canterbury Tales, with woodcuts. Like the book at Paris, it had long been used, leaf by leaf, in utter ignorance of its value, to light the vestry fire. Originally worth at least L800, it was then worth half, and, of course, I energetically drew the attention of the minister in charge to it, as well as to another grand Folio by Rood and Hunte, 1480. Some years elapsed, and then the Ecclesiastical Commissioners took the foundation in hand, but when at last Trustees were appointed, and the valuable library was re-arranged and catalogued, this "Caxton," together with the fine copy of "Latterbury" from the first Oxford Press, had disappeared entirely. Whatever ignorance may have been displayed in the mutilation, quite another word should be applied to the disappearance. The following anecdote is so _apropos_, that although it has lately appeared in No. 1 of _The Antiquary_, I cannot resist the temptation of re-printing it, as a warning to inheritors of old libraries. The account was copied by me years ago from a letter written in 1847, by the Rev. C. F. Newmarsh, Rector of Pelham, to the Rev. S. R. Maitland, Librarian to the Archbishop of Canterbury, and is as follows:--