nation traversing a crisis, the epoch will assuredly be commemorated. It would remain to provide for the regular reprinting of the catalogue with its accessions at intervals, say of a quarter of a century. England would then possess a complete index to the growth of the national library, and the world would have the nearest approach to a register of all literature that, in the absence of any feasible scheme for a universal catalogue by co-operation among public libraries, it seems likely to obtain. Even this more ambitious project might be promoted if public libraries would consent to take the Museum Catalogue as a basis, and publish lists of such of their own books as are not to be found in it. By this means the expense and labour of cataloguing would be very greatly reduced, and the combination of these lists with the Museum Catalogue, when this came to be printed for the third time, say about 1925, would at last provide the desideratum of a universal register of literature.
Ambitious undertakings like these, however, depend upon the co-operation of many governments and many institutions. We can speak with more confidence of the efforts of the Museum to provide what is only second in importance to the catalogue itself—a classified index of its contents. With this object in view several copies of the catalogue are printed on one side only, that when completed they may be cut up, and the titles sorted according to subject, and re-arranged in classified lists. Thus by simply putting together all titles bearing the
