Within these broad lines, which do not include libraries privately acquired by institutions, such as the Dyce, Forster, and Sandars, or by the trade, which is an almost daily incidence, are comprehended a preponderant share of all the important books which have come to the front since the earliest period, of which there is an authentic register.
For we have to recollect that many of the persons whose possessions were dispersed only in our time were buyers a century or more ago, and had from Osborne, at what still appear to our weak minds provokingly low prices, his Harleian bargains. By the way, he kept them a tolerably long time. Did some one help him to find the money, or did he pay it by instalments? Seriously speaking, it was rather a white elephant. One of the most notorious private transactions in the way of sales of books _en bloc_ was that by the Royal Society in 1873 of the printed portion of the Pirkheimer Library, presented to it by Henry Howard, Duke of Norfolk, the first president, and originally purchased by his ancestor, the celebrated Earl of Arundel, in 1636.
The dispersion of the Harleian Library doubtless gave an impetus to the revival in the eighteenth century of a taste for book-collecting; but of course a large proportion of the purchases from Osborne himself was on the part of buyers who parted with their acquisitions, and of whom we have no further record. But the Osterley Park and Ham House collections, the latter still intact, owed many indeed of their greatest treasures to this source. In 1768 Dr. Johnson, who had had a leading hand in the compilation of the Harleian Catalogue, and had so gained a considerable experience of the bearings of the matter, as they were then understood, addressed a long and interesting letter to the King's Librarian on the subject of the public collections of Europe and other bibliographical particulars.
Of the libraries above mentioned, the Sunderland, Syston Park (Sir John Thorold), and Hamilton-Beckford collections owed their chief importance to early typography, _editiones principes_ of the classics, and bindings. Among the Blenheim books were a few miscellaneous rarities in the English class. Of Beckford's volumes many contained his MSS. notes.