PUBLIC LAWS-CH. 253-JUNE 30, 1939 52 Stat. 347,699,1205. Vehicles, field work. 42 Stat. 217. 23U.S.C. I 21,23. Investigations, dem- onstrations, etc. Administrative ex- penses. Agricultural chemi- cal investigations. 12 Stat. 387. U.S . 0 . 1611,512. Biological, etc., in- vestigations. Methods of sugar manufacture, etc. Utilization of fruits and vegetables. Frozen pack inves- tigations. Control of noxious weeds, etc. Winter Haven, Fla., Citrus Products Lab- oratory, addition. Industrial utiliza- tion of farm products and byproducts. Utilization of native substances for color, medicinal, etc., pur- poses. Act of May 11, 1938 (52 Stat. 347), $6,000; San Bernardino and Cleve- land National Forests in Riverside County, California, Act of June 15, 1938 (52 Stat. 699) $15,000; Nevada and Toiyabe National Forests, Nevada, Act of June 25, 1938 (52 Stat. 1205), $10,000; in all, $71,000. Total, Forest Service, $20,294,466, of which amount not to exceed $61,628 shall be available for the purchase of motor-propelled and horse-drawn passenger-carrying vehicles necessary in the conduct of field work outside the District of Columbia, and in addition thereto there is authorized for expenditure from funds provided for carrying out the provisions of the Federal Highway Act of November 9, 1921 (23 U. S . C . 21, 23), not to exceed $9,755 for the purchase of motor- propelled passenger-carrying vehicles for use by the Forest Service in the construction and maintenance of national-forest roads. BUREAU OF AGRICULTURAL CHEMISTRY AND ENGINEERING SALARIES AND EXPENSES For investigations, experiments, and demonstrations hereinafter authorized, independently or in cooperation with other branches of the Department of Agriculture, other departments or agencies of the Federal Government, States, State agricultural experiment stations, universities, and other State agencies and institutions, counties, municipalities, business, farm, or other organizations and corporations, individuals, associations, and scientific societies, including the employ- ment of necessary persons and means in the city of Washington and elsewhere; and for erection, alteration, and repair of buildings out- side the District of Columbia at a total cost not to exceed $15,000, as follows: General administrative expenses: For necessary expenses for gen- eral administrative purposes, including the salary of Chief of Bureau and other personal services in the District of Columbia, $112,800. Agricultural chemical investigations: For conducting the investiga- tions contemplated by the Act of May 15, 1862 (5 U. S . C. 511, 512), relating to the application of chemistry to agriculture; for the biologi- cal, chemical, physical, micros icalc, and technological investigation of foods, feeds, drugs, plant and animal products, and substances used in the manufacture thereof; for investigations of the physiological effects and for the pharmacological testing of such products and of insecticides; for the investigation and development of methods for the manufacture of sugars, sugar sirups, and starches and the utiliza- tion of new agricultural materials for such purposes; for the tech- nological investigation of the utilization of fruits and vegetables and for frozen pack investigations; for the investigation of chemicals for the control of noxious weeds and plants; and to cooperate with asso- ciations and scientific societies in the development of methods of analysis, $411,500, of which amount not to exceed $19,000 shall be available for the construction and equipment of an addition to the United States Citrus Products Laboratory, Winter Haven, Florida. Industrial utilization of farm products and byproducts: For the investigation, development, experimental demonstration and applica- tion of methods for the industrial utilization of agricultural products, waste, and byproducts, and products made therefrom, except as other- wise provided for in this Act, by the application of chemical, physi- cal, and technological methods, including the changes produced by micro-organisms such as yeasts, bacteria, molds, and fungi; the utilization for color, medicinal, and technical purposes of substances grown or produced in the United States, $191,200. [53 STAT.