A curious question as to the prohibition of importation arose in connection with a Swedish translation of the "purity" books of the "Self and sex" series, by Dr. Sylvanus Stall, of Philadelphia, author and publisher of this series. The original works in this series are by an American author written and printed in English and manufactured and copyrighted in America; and there are translations into twenty or more languages authorized by the author but not copyrighted in the United States. The copyright proprietor made an importation of the Swedish translation without question, but the second importation was stopped by the customs authorities at Philadelphia on the ground that the Swedish translation was a copy of the American copyrighted work and must therefore be denied admission because not manufactured in America. On appeal, the Treasury Department, June 23, 1910, overruled the local authorities and admitted the translation made in Sweden, and bearing no copyright notice, as a work "of foreign origin in a language other than English." {Sidenote: Books dutiable} Copyright protection and tariff "protection" are often spoken of as related with each other, chiefly because in this country the importation of books for libraries is, to a limited extent, free from tariff duties as well as from copyright restrictions. There is no real relation between them, but the sections of the American tariff of 1910 dealing with books and works of art may be cited for the convenience of importers: "(416) Books of all kinds, bound or unbound, including blank books, slate books and pamphlets, engravings, photographs, etchings, maps, charts, music in books or sheets, and printed matter, all the foregoing wholly or in chief value of paper, and not specially provided for in this section, twenty-five per centum ad valorem; views of any landscape, scene, building, place, or locality in the United States on cardboard or paper, not thinner than eight one-thousandths of one inch, by whatever process printed or produced, including those wholly or in part produced by either lithographic or photogelatin process (except show cards), occupying thirty-five square inches or less of surface per view, bound or unbound, or in any other form, fifteen cents per pound and twenty-five per centum ad valorem; thinner than eight one-thousandths of one inch, two dollars per thousand: Provided, That the rate or rates of duty provided in the tariff Act approved July twenty-fourth, eighteen hundred and ninety-seven, shall remain in force until October first, nineteen hundred and nine, on all views of any landscape, scene, building, place, or locality, provided for in this paragraph, which shall have, prior to July first, nineteen hundred and nine, been ordered or contracted to be delivered to bona fide purchasers in the United States, and the Secretary of the Treasury shall make proper regulations for the enforcement of this provision." {Sidenote: Books on free list}