IMPORTATION 289
Ing 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, in- cluding 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- thou- sandths of one inch, two dollars per thousand : Pro- vided, 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 Secre- tary of the Treasury shall make proper regulations for the enforcement of this provision."
The following are included in the "free list" and Books on are therefore free from any duties : fr^* list
" (516) Books, engravings, photographs, etchings, bound or unbound, maps and charts imported by authority or for the use of the United States or for the use of the Library of Congress.
" (517) Books, maps, music, engravings, photo- graphs, etchings, bound or unbound, and charts, which shall have been printed more than twenty years at the date of importation, and all hydrographic charts and publications issued for their subscribers or exchanges by scientific and literary associations or
