53 STAT.] 76TH CONG. , 1ST SESS. - CH. 88 -APR. 26, 1939 amount not in excess of $8,000,000, and his action in so doing shall be deemed a contractual obligation of the Federal Government for the payment of the cost thereof. ROCK ISLAND BRIDGE, ROCK ISLAND, ILLTTNOIS For operating, repair, and preservation of Rock Island bridges and viaduct, and maintenance and repair of the arsenal street connecting the bridges, $32,835. REPAIRS OF ARSENALS For repairs and improvements of ordnance establishments, and to meet such unforeseen expenditures as accidents or other contingencies may require, $1,050,000. CHEMICAL WARFARE SERVICE For purchase, manufacture, and test of chemical warfare gases or other toxic substances, gas masks, or other offensive or defensive materials or appliances required for gas-warfare purposes; investi- gations, research, design, experimentation, and operation, purchase of chemicals, special scientific and technical apparatus and instruments, including services connected therewith; for the payment of part-time or intermittent employment of such scientists and technicists as may be contracted for by the Secretary of War, in his discretion, at a rate of pay not exceeding $20 per diem for any person so employed; for the purchase, maintenance, repair, and operation of freight- and passenger-carrying motor vehicles; construction, maintenance, and repair of plants, buildings, and equipment, and the machinery there- for; receiving, storing, and issuing of supplies, comprising police and office duties, rents, tolls, fuels, gasoline, lubricants, paints and oils, rope and cordage, light, water, advertising, stationery, type- writing and adding machines including their exchange, office furni- ture, tools, and instruments; for incidental expenses; for civilian employees; for libraries of the Chemical Warfare Service and sub- scriptions to periodicals; for expenses incidental to the organization, training, and equipment of special gas troops not otherwise provided for, including the training of the Army in chemical warfare, both offensive and defensive, together with the necessary schools, tactical demonstrations, and maneuvers; for current expenses of chemical projectile filling plants and proving grounds, including construction and maintenance of rail transportation, repairs, alterations, acces- sories, building and repairing butts and targets, clearing and grading ranges, $1,663,000. CHIEF OF INFANTRY INFANTRY SCHOOL, FORT BENNING, GEORGIA For the procurement of books, publications, instruments, and mate- rials, pay of employees, and other necessary expenses for instruction at the Infantry School, $60,027. 609 Operating bridges, etc. Repairs of arsenals. Post, p. 996. Purchase, manufac- ture, etc., of gases. Post, p. 996. Part-time employ- ment of scientists, etc. Vehicles. Plants, buildings, machinery, etc. Civilian employees. Special gas troops. Projectile filling plants and proving grounds. Instruction ex- penses. CHIEF OF CAVALRY INSTRUCTION IN CAVALRY ACTIVITIES Instruction ex- For the purchase of textbooks, books of reference, scientific and pro- penses e fessional papers, instruments, and materials for instruction; employ- ment of temporary, technical, special, and clerical services; and for other necessary expenses of instruction at the Cavalry School, Fort Riley, Kansas; and for the instruction of the Army in cavalry activities, $28,120.
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