The man who has resolved upon getting together a collection of first-class books may not unreasonably be appalled at the difficulties which stand in the way. And what, indeed, it may be asked, will become of the hundreds and thousands of books which are now all the fashion? How many will survive the levelling process of the next half a score of years, and how few will be known, except to bibliographers, half a century hence? The lessons of the past would aid us in arriving at some sort of conclusion as regards the future, if we were inclined to indulge in speculation of this vain character. It will, however, be interesting to point out that of the 1,300 books printed before the beginning of the sixteenth century, not more than 300 are of any importance to the book-collector. Of the 50,000 published in the seventeenth century, not more than perhaps fifty are now held in estimation; and of the 80,000 published in the eighteenth century not more than 300 are considered worth reprinting, and not more than 500 are sought after. In a curious little book, 'L'An 2440, revue s'il en fut jamais,' published in Paris a century ago, there is a very quaint description of the process by which, in an improved state of society, men would apply themselves not to multiply books, but to gather knowledge. The sages of the political millennium exhibited their stores of useful learning in a cabinet containing a few hundred volumes. All the lumber of letters had perished, or was preserved only in one or two public libraries for the gratification of a few harmless dreamers that were tolerated in their laborious idleness. This pleasant little picture, drawn by M. L. S. Mercier, of the state of things five centuries hence, is in strong contrast to the painful plethora of books of the present day. Dr. Ingleby, the famous Shakespearian scholar, is credited with the idea of establishing a society for the purpose of procuring books which no one else would buy; but this society (the 'Syncretic Book-club') could not have had any success if the vast quantities of unsaleable rubbish which one meets with on every hand are to be taken into account. Doubtless Dr. Ingleby would have included in his scope such books as Lord Lonsdale's 'Memoir of the Reign of James II.,' 1803, which fifty years ago sold for 5-1/2 guineas, but which, within the past few months, has declined to two shillings!