PUBLIC LAWS-CH. 247-MAY 2, 1946 injurious deposits within the harbor and adjacent waters of New York Coalforni DCbris City; for expenses of the California D6bris Commission in carrying on . the work authorized by the Act approved March 1, 1893, as amended 27 Stat. 507. (33 U. S . C. 661, 678, and 683); for removing sunken vessels or craft obstructing or endangering navigation as authorized by law; for oper- ating and maintaining, keeping in repair, and continuing in use with- out interruption any lock, canal (except the Panama Canal), canalized river, or other public works for the use and benefit of navigation belonging to the United States, including maintenance of the Hennepin Student officers. Canal in Illinois; for payment annually of tuition fees of not to exceed fifty student officers of the Corps of Engineers at civil technical institu- tions under the provisions of section 127a of the National Defense 10 U.S. C ., Supp. Act, as amended (10 U. S. C. 535); for examinations, surveys, and v, 535. contingencies of rivers and harbors; for the execution of detailed investigations and the preparation of plans and specifications for irining and bind- projects heretofore or hereafter authorized; for printing and binding, newspapers, lawbooks, books of reference, periodicals, and office sup- plies and equipment required in the Office of the Chief of Engineers to carry out the purposes of this appropriation, including such print- ing as may be authorized by the Committee on Printing of the House of Representatives, either during a recess or session of Congress, of surveys authorized by law, and such surveys as may be printed during a recess of Congress shall be printed, with illustrations, as documents Vehicles and motor- of the next succeeding session of Congress, and for the purchase in the bot. fiscal year 1947, of not to exceed five hundred and fifty motor-propelled Unauthorized sur- passenger-carrying vehicles and ten motorboats: Provided, That no eys, etc. part of this appropriation shall be expended for any preliminary examination, survey, project, or estimate not authorized by law, Bridge, Illinois $110,125,250, including $25,000 for the removal of the Upper Free Bridge over the Illinois River at Peoria, Illinois: Provided further, Harbor channels. That from this appropriation the Secretary of War may, in his dis- cretion and on the recommendation of the Chief of Engineers based on the recommendation by the Board of Rivers and Harbors in the review of a report or reports authorized by law, expend such sums as may be necessary for the maintenance of harbor channels provided by a State, municipality, or other public agency, outside of harbor lines and serving essential needs of general commerce and navigation, such work to be subject to the conditions recommended by the Chief Peranent Interna- of Engineers in his report or reports thereon: Provided fiurther, That tional Cormission of tr (Congresses of not to exceed $3,000 of the amount herein appropriated shall be avail- av.iation. able for the support and maintenance of the Permanent International Commission of the Congresses of Navigation and for the payment of the expenses of the properly accredited delegates of the United States to the meeting of the Congresses and of the Commission. Alteration of bridges. Alteration of bridges over navigable waters of the United States: For payment of the share of the United States of the cost of altera- tion of bridges over navigable waters of the United States in accord- 33U.s. . 511- ance with the provisions of the Act of June 21, 1940 (Public Law 523. 647), $2,900,000, to remain available until expended. FLOOD CONTROL Construction and Flood control, general: For the construction and maintenance of maintenance. Post, p . 641. certain public works on rivers and harbors for flood control, and for other purposes, in accordance with the provisions of the Flood Con- 49 Stat. 1570. trol Act, approved June 22, 1936, as amended and supplemented, 33 U. S. C. §§ 701a-p 701f, 701S; upp. 1 v, including printing and binding, newspapers, lawbooks, books of 701b et se. reference, periodicals, and office supplies and equipment required in the Office of the Chief of Engineers to carry out the purposes of Vehicles. this appropriation, and for the purchase in the fiscal year 1947, of [60 STAT.