The magazine gives just what he wants in several pages.

There are periodicals exclusively devoted to every branch of every science, and magazines which, in their files, include articles on all subjects.

This mine of information has been opened up by Poole's index.

Since 1881, when the third and enlarged edition of Poole's index was published, all this is common property for the asking.

Grouped around Poole and keeping pace with the times are the Poole supplements, which ought, perhaps, to be named the Fletchers, covering the five-year periods since 1881, ending respectively 1886, 1891, 1896.