comparative scarcity or full supply of many books, with a glimpse of titles which you may never have met before. The value of the study of catalogues as an education in bibliography can never be over-estimated. The large number of active and discriminating book-buyers from America has for years past awakened the interest and jealousy of collectors abroad, where it has very largely enhanced the price of all first-class editions, and rare works. No longer, as in the early days of Dibdin and Heber, is the competition for the curiosities of old English literature confined to a half-score of native amateurs. True, we have no such omnivorous gatherers of literary rubbish as that magnificent _helluo librorum_, Richard Heber, who amassed what was claimed to be the largest collection of books ever formed by a single individual. Endowed with a princely fortune, and an undying passion for the possession of books, he spent nearly a million dollars in their acquisition. His library, variously stated at from 105,000 volumes (by Dr. Dibdin) to 146,000 volumes (by Dr. Allibone) was brought to the hammer in 1834. The catalogue filled 13 octavo volumes, and the sale occupied 216 days. The insatiable owner (who was a brother of Reginald Heber, Bishop of Calcutta) died while still collecting, at the age of sixty, leaving his enormous library, which no single house of ordinary size could hold, scattered in half a dozen mansions in London, Oxford, Paris, Antwerp, Brussels and Ghent. Yet the owner of this vast mass of mingled nonsense and erudition, this library of the curiosities of literature, was as generous in imparting as in acquiring his literary treasures. No English scholar but was freely welcome to the loan of his volumes; and his own taste and critical knowledge are said to have been of the first order.