In the Harleian MSS. there is an interesting account of the several libraries, public and private, which existed in London during the earlier part of the last century. From this source we learn that 'in the days of Edward VI., in the chapel adjoining to the Guildhall, called my Lord Maiors Chapell, was a library well furnisht, being all MSS. Stow says the Duke of Somerset borrowed them, with a design never to return them, but furnisht his own study in his pompous house in the Strand; they were five cartloads.' Horace Walpole expressed his opinion to the effect that virtuosi have been long remarked to have little conscience in their favourite pursuits. A man will steal a rarity, who would cut off his hand rather than take the money it is worth. Yet in fact the crime is the same. He tells us of a 'truly worthy clergyman, who collects coins and books. A friend of mine mentioning to him that he had several of the Strawberry Hill editions, this clergyman said, "Aye, but I can show you what it is not in Mr. Walpole's power to give you." He then produced a list of the pictures in the Devonshire, and other two collections in London, printed at my press. I was much surprised. It was, I think, about the year 1764, that, on reading the six volumes of "London and its Environs," I ordered my printer to throw off one copy for my own use. This printer was the very man who, after he had left my service, produced the noted copy of Wilkes's "Essay on Woman." He had stolen one copy of this list; and I must blame the reverend amateur for purchasing it of him, as it was like receiving stolen goods.' The number of book-thieves has increased with the extension of public (or free) libraries. Here, the accumulated ingenuity of the literary thief has an ample scope, and he is not the man to let an opportunity escape. Some of the tribe have a mania for old directories; but novels are the most popular. The clerical thief with a thirst for sermons and theological literature is a by no means infrequent customer--and truly the indictment of a thief of this description ought to bear the fatal endorsement continued almost up to our own times, _sus. per coll._--'let him be hanged by the neck.' At one time nearly all the volumes in the very useful Bohn's Library series were kept in the Reading-room of the British Museum, but they so frequently disappeared that the authorities decided upon their permanent sequestration to a less handy part of the building. Last year Mr. C. Trice Martin's new 'Record Interpreter' was so highly appreciated both at the Record Office and at the Reading-room, that the copy at each institution was stolen from the shelves within twenty-four hours of its being placed there.