PUBLIC LAWS--CH. 147-JUNE 26, 1943 Reserve Officers' Training Corps) executed at the Government Print- ing Office, $863,000. PRINTING HISTORICAL AND NAVAL DOCUMENTS Fourteen thousand dollars of the appropriation "Printing Historical and Naval Documents, 1943," are hereby repealed, and any unobli- gated balance remaining is hereby continued available until June 30, 1944. CONTINGENT AND MISCELLANEOUS EXPENSES, HYDROGRAPHIC OFFICE For all necessary expenses (except salaries) for the maintenance and operation of the Hydrographic Office at the seat of government and for all necessary salaries and expenses for the branch offices, including purchase and printing of nautical books, charts, and sailing directions; modernization, care, and repair of lithographic presses and machinery; pilot and aeronautical charts, reference books and periodicals, $841,000. CONTINGENT AND MISCELLANEOUS EXPENSES, NAVAL OBSERVATORY For professional and scientific books, books of reference, periodi- cals, engravings, photographs, and fixtures for the library; apparatus and instruments, and repairs of the same; repairs to buildings (including quarters), fixtures, and fences; cleaning, repair, and upkeep of grounds and roads; furniture and furnishings for offices and quarters, gas, chemicals, paints, and stationery, including trans- mission of public documents through the Smithsonian exchange, for- eign postage; plants, seeds, and fertilizers; materials needed for the maintenance and repair of boilers, engines, heating apparatus, electric lighting and power, and water supply; maintenance, repair, and operation of passenger automobiles; rental of tabulating and other mechanical equipment; and other necessary expenses, $46,000. Post, p. 627. GENERAL PROVISIONS Letters patent. SEC. 102. The appropriations made in this Act for the purchase or manufacture of equiplent or material or of a particular class of equipment or material shall be available for the purchase of letters patent, applications for letters patent, and licenses under letters pat- ent and applications for letters patent that pertain to such equipment or material for which the appropriations are made. RestNictyi on use SEC. 103. No part of any appropriation made for the Navy shall y Navy Depart- be expended for any of the purposes herein provided for on account of t.the Navy Department at the seat of government, including personal services of civilians, except as expressly authorized by law. Detail of enlisted SEC. 104. Such number of enlisted personnel as may be approved by the Secretary may be detailed to duty in the Navy Department at the seat of government and Marine Corps and Coast Guard headquarters, excepting from such number, as far as practicable, enlisted personnel qualified for combat service. vices, restrinde SEC. 105. No part of the appropriations made in this Act shall be available for the salary or pay of any officer, manager, superintendent, foreman, or other person or persons having charge of the work of any employee of the United States Government while making or causing to be made with a stop watch or other time-measuring device a time study of any job of any such employee between the starting and completion thereof, or ofthe movements of any such employee while ash . engaged upon such work; nor shall any part of the appropriations [57 STAT.