BUREAU OF CONSTRUCTION AND REPAIR For designing naval vessels, including services, instruments, appa- ratus, and materials necessary for experimental and research work ; payment of part time or intermittent employment in the District of Columbia, or elsewhere, of such scientists and technicists as may be contracted for by the Secretary of the Navy, in his discretion, at a rate of pay not exceeding $20 per diem for any person so employed ; maintenance, repairs, and alterations of vessels ; care and preserva- tion of vessels out of commission ; docking of vessels ; salvage and salvage services for naval floating property ; construction and repair of district and yard craft ; purchase and manufacture of equipage, appliances, supplies, and materials at home and abroad as required for the maintenance, repair, alteration, and operation of naval vessels and district and yard craft ; carrying on work of the experimental model basin and wind tunnel ; tools and appliances for all purposes in navy yards and naval stations ; labor in navy yards and naval stations and elsewhere at home and abroad ; accident prevention ; pay of classified field force, including employees in material inspection and superintending constructors' offices ; incidental expenses at navy yards and naval stations and in material inspection and superintend- ing constructors' offices such as photographing, technical and profes- sional books and magazines, plans, stationery, drafting instruments and other materials, $19,458,500 : Provided, That the sum to be paid out of this appropriation for employees assigned to group IV (b) and those performing similar services carried under native and alien schedules in the Schedule of Wages for Civil Employees in the Field Service of the Navy Department shall not exceed $1,890,000 . Bureau of Construc- tion and Repair . Construction and repair of vessels . Field force. Proviso . Group IV (b) em- ployees . 75 TH CONGRESS, 1ST SESSION-CH . 140 -AP RIL 27, 1 937 103 renewals of electric interior and exterior signal communications and all electrical appliances of whatsoever nature on board naval vessels, ex cept range finde rs, b attle order and range trans mitter s and indi - cators, and motors and their controlling apparatus used to operate machinery belonging to other b ureaus ; searchligh ts and fire -control eq uipme nts fo r ant iairc raft d efens e at shore stati ons ; ma inte nan ce and operation of coast signal service ; equipage, supplies, and materials under the cognizance of the Bureau required for the main- tenance and operation of naval vessels, yard craft, and ships' boats ; purchase, installation, repair, and preservation of machinery, tools, and appliances in navy yards and stations, accident prevention, pay of classified field force under the Bureau ; incidental expenses for naval vessels, navy yards, and stations, inspectors' offices, the engi- neering experiment station, such as photographing, technical books a nd pe riodic als, stati onery, and instru ments ; serv ices, instr uments, machines and auxiliaries, apparatus and supplies, and technical books and periodicals necessary to carry on experimental and research work ; maintenance and equipment of buildings and grounds at the engineering experiment station, Annapolis, Maryland ; payment of part time or intermittent employment in the District of Columbia or elsewhere of such scientists and technicists as may be contracted for by the Secretary of the Navy, in his discretion, at a rate of pay not exceeding $20 per diem for any persons so employed ; in all, $22,080,800 : Provided, That the sum to be paid out of this appropri- ation for e mployees assigned to group IV (b) and those performing similar services carried under native and alien schedules in the Schedule of Wages for Civil Employees in the Field Service of the 58,500 . Navy Department shall not exceed $1, 758,50 0 . Annapolis, bld ., engineering experi- ment sta tion . Proviso . Group IV ployees . (b) em-
