repeatedly over the same ground without frequent recurrence to the same facts and arguments: and it has been thought better to tolerate an admitted literary blemish than to run any risk of impairing the documentary value of the articles. If the writer had once begun to alter, he might have been tempted to alter much. Readers of the present day may feel surprise at the tentative character of some portions of the first essay in order of date, and at what seems almost a discouragement of the idea of a complete printed catalogue. The principal reason was the moderate expectation then entertained of any substantial help from the Treasury. As a matter of fact, the annual grant bestowed in the first instance would have kept the catalogue forty years at press; and, had a strictly alphabetical order of publication been adopted, it would after some years have been pointed out with derision that the great British Museum Catalogue was still in its ABC. The writer, therefore, exerted what influence he possessed to keep the idea of a complete printed catalogue in the background, and to enforce that of the publication of single articles complete in themselves which would be valuable as special bibliographies. A mere fragment of letter A, it was manifest, could be of little use beyond the walls of the Museum, but a separate issue of the article Aristotle might have great worth. The situation was entirely altered when the Treasury
