PUBLIC LAWS-OH. 185-JULY 1, 1943 telephone service for the various bureaus of the War Department in the District of Columbia, and toll messages pertaining to the office Telegraph lines. f the Secretary of War; electric time service; the rental of commer- cial telegraph lines and equipment, and their operation at or connect- ing any post, camp, cantonment, depot, arsenal, headquarters, hospital, aviation station, or other office or station of the Army, including pay- ment for official individual telegraph messages transmitted over Electrical install,- commercial lines; electrical installations and maintenance thereof at tions. military posts, cantonments, camps, and stations of the Army, fire control and direction apparatus, and mat6riel for Field Artillery; salaries of civilian salaries of civilian employees, including those necessary as instructors employees. at vocational schools; supplies, general repairs, reserve supplies, and other expenses connected with the collecting and transmitting of Experimental work. information for the Army by telegraph or otherwise; experimental investigation, research, purchase, and development, or improvements in apparatus, and maintenance of signaling and accessories thereto, including machines, instruments, and other equipment for laboratory and repair purposes; lease, alteration, and repair of such buildings required for storing or guarding Signal Corps supplies, equipment, and personnel when not otherwise provided for, including the land therefor, the introduction of water, electric light and power, sewerage, Aircraft warning grading, roads and walks, and other equipment required; for all expenses incident to the preparation of plans, and construction, pur- chase, installation, equipment, maintenance, repair, and operation of aircraft warning service systems, and their accessories, including purchase of lands and rights-of-way, acquisition of leaseholds and other interests therein, and temporary use thereof, $4,646,168,000. AIM CORPS AIR CORPS, ARMY Courses of instruc- For creating, maintaining, and operating at established aviation and related schools courses of instruction for military personnel, including payment of tuition, cost of equipment and supplies neces- sary for instruction, purchase of tools, equipment, materials, machines, textbooks, books of reference, scientific and professional papers, instru- iAlrcra operation, ments, and materials for theoretical and practical instruction; for maintenance, repair, storage, and operation of airships, war balloons, and other aerial machines, including instruments, materials, gas plants, hangars, and repair shops, and appliances of every sort and description necessary for the operation, construction, or equipment of all types of aircraft, and all necessary spare parts and equipment connected therewith and the establishment of landing and take-off Photographic Bsup runways; for purchase of supplies for securing, developing, printing, pliand reproducing photographs in connection with aerial photography, including aerial mapping and charting; improvement, equipment, maintenance, and operation of plants for testing and experimental work, and procuring and introducing water, electric light and power, gas, and sewerage, including maintenance, operation, and repair of Helium gs. such utilities at such plants; for the procurement of helium gas; Post, p. 4S5 . Travel expense. for travel of military and civilian personnel in connection with the administration of this appropriation, including travel by air or rail required in connection with the transportation of new aircraft from ivilian employees. factory to first destination; salaries and wages of civilian employees as may be necessary; transportation of materials in connection with types ofaaft consolidation of Air Corps activities; experimental investigations and purchase and development of new types of aircraft, accessories thereto, and aviation engines, including plans, drawings, and speci- 356 [57 STAT.
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