One might be led to think from the title "Subject Index" that each document included had been minutely indexed. This is not the case and it would have been impractical to have attempted to do so, but on the other hand when a document was found to include material on several topics, such, for example, as mail service, fisheries, agriculture, it has been listed under these various headings. Perhaps it is more nearly a catalogue than an index to documents. Arranged as it is under broad headings rather than specific ones, the index can scarcely be considered a ready reference tool, but I am doubtful if it could have been made so, at least not without greatly increasing the amount of work entailed in compiling it. The index covers a much wider range of topics than the word history usually is taken to include. Banks and banking, missions, mail service, education, roads, and cost of living are some of the subject headings which are used. Accordingly it would seem that the index should prove indispensable to any one who is studying the development of the Pacific Northwest from a social, political, religious, economic, or historical point of view. Although the index is of primary use to the serious student, still it makes available much thoroughly readable material for those who have interested themselves in the history of the Pacific Northwest merely for their own pleasure. CHARLES H. COMPTON. * * * * * GUIDE TO THE MATERIALS FOR UNITED STATES HISTORY IN CANADIAN ARCHIVES. By David W. Parker. (Washington, Carnegie Institution of Washington, 1913. Pp. 339.)