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JUDD & DETWEILER, PRINTERS,

WASHINGTON, D. C.

Forestry Library
4. B. Endworth Request
5-17-1929

ADVERTISEMENT.

The present work was undertaken by Dr. H. C. BOLTON, some time before the publication of the valuable “Catalogue of Scientific Serials" of Mr. SAMUEL H. SCUDDER, by Harvard University, in 1879.

Mr. SCUDDER'S Catalogue includes the transactions of learned Societies in the natural, physical, and mathematical sciences; but, excepting to a very limited extent, does not embrace technical journals. Dr. BOLTON's Catalogue is confined to scientific and technical "Periodicals" proper, (exclusive of Society proceedings and transactions)-yet, by this extension to the wide field of periodicals devoted to the "applications" of science, considerably exceeds the other in the number of titles. The former Catalogue is arranged geographically by the countries and cities of publication; and it extends from the earliest records to the year 1876. The present Catalogue is alphabetical throughout;-the dictionary form presenting undoubtedly the greatest facility of reference: and it is brought down to the year 1882. It will be seen therefore that the two undertakings are quite different in their scope and that the interest of science is involved in the publication of the second work. The compiler has devoted a number of years to this arduous task— amid the exactions of his duties as teacher of chemistry-without any expectation of remuneration, and purely as a labor of love for the benefit of scientific students and others.

The Catalogue met the warm approval of Mr. A. R. SPOFFORD, the Librarian of Congress, who desired to have the work published under the auspices of the National Library. The failure to secure the necessary appropriation from Congress prevented however this consummation. It was then undertaken by the Smithsonian Institution.

Various unexpected delays have somewhat retarded the production of the volume, which had been confidently looked for at least a year earlier.

The numerous cross-references will enable the student to find a periodical, when carelessly cited by merely the editor's name,-which may happen to be a purely local designation. The "Chronological Tables" appended supply the useful knowledge of the date of a cited volume-a point too often neglected in popular references. And finally, the "Library Check-List"

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