Note 32 — V A NATIONAL LIBRARY SERVICE.

“A union catalogue of the current periodicals preserved in the German libraries, published in 1914, comprised some 17,000 entries. A similar list for the periodicals filed in the libraries of the United Kingdom, prepared in 1914-15 by some English State and copyright librarians, was submitted for publication to the Department of Scientific and Industrial Research, but the proposal met with no encouragement. Yet the compilation of such a list is an essential preliminary to the proper national organization of knowledge. For a union list indicates the relative strength and weakness of our national libraries in respect of their periodical collections: it enables the librarian to correct the latter without unduly increasing the expenditure of the library in that department of literature.” Nature, June 9, 1921—“Co-operative Indexing of Periodical Literature.”