_Photography applied to Catalogues of Books._--May not photography be
usefully applied to the making of catalogues of large libraries? It would
seem no difficult matter to obtain any number of photographs, of any
required size, of the title-page of any book. Suppose the plan adopted,
that five photographs of each were taken; they may be arranged in five
catalogues, as follows:--Era, subject, country, author, title. These being
arranged alphabetically, would form five catalogues of a library probably
sufficient to meet the wants of all. Any number of additional divisions may
be added. By adopting a fixed breadth--say three inches--for the
photographs, to be pasted in double columns in folio, interchanges may take
place of those unerring slips, and thus librarians aid each other. I throw
out this crude idea, in the hope that photographers and librarians may
combine to carry it out.