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 266 Soil types, eompasi- tion, etc ., investiga- tions. Soil survey. Se rvices i n the Dis- trict. Ve hicles. Ent om ol ogy and Pla nt Q uara ntin e Bu- reau. Salaries and expenses. Investigations, etc ., of insects. Plant Quarantine Ac t, enforcement. Vol. 37, p. 315 Vol. 39, p. 1185; Vol .44,p. 250 . U. S.C,,p. 122. Proviso. Cost of buildings. General administra- tive expenses. Fruit insects . Jap ane se bee tle. Mexican fruit fly, Citrus canker eradi- c ation. 74TH CONGRESS. SESS. I. CH. 131. MAY 17, 1935. and potash, and other soil amendments and their suitability for agricultu ral use, $ 269,595. Soil chemical and physical investigations : For chemical, physical, and physical-chemical investigations of soil types, soil composition, and soil minerals, the soil solution, solubility of soil, and all chemical and physical properties of soils in their relation to soil formation, soil texture, erosibility, and soil productivity, $68,081. Soil survey : For the investigation of soils and their origin, for survey of the extent of classes and types, and for indicating upon maps and plats, by coloring o r otherwis e, the res ults of suc h investi- gations and surveys, $286,208, of which $10,000 shall be immediately available. Total, Bureau of Chemistry and Soils, $1,279,434, of which amount not to exceed $963,646 may be expended for personal services in the District of Columbia, and not to exceed $1,770 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 Columbi a. BUREAU OF ENTOMOLOGY AND PLANT QUARANTINE SALARIES AND EXPENSES For necessary expenses connected with investigations, experiments, and demonstrations for the promotion of economic entomology, for investigating and ascertaining the best means of destroying insects and related pests injurious to agriculture, for investigating and importing useful and beneficial Insects and bacterial, fungal, and other diseases of insects and related pests, for investigating and ascertaining the best means of destroying insects affecting man and animals, to enable the Secretary of Agriculture to carry into effect the provisions of the Plant Quarantine Act of August 20, 1912, as amended, to conduct other activities hereinafter authorized, and for the e radica tion, contr ol, a nd pre venti on of spread of injurious insects and plant pests ; independently or in cooperation with other branches of the Federal Government, States, counties, municipalities, corporations, agencies, individuals, or with foreign governments including the employment of necessary persons and means in the District of Columbia and elsewhere, rent, construction, or repair of necessary buildings outside the District of Columbia : Prov ided , That the cost for the construction of any building shall not exceed $1,500, and that the total amount expended for such construction in any one y ear shall not exceed $7,000, a s follows General administrative expenses : For general administrative pur- poses, including the salary of chief of bureau and other personal services, $162,288. Fruit insects : For insects affecting fruits, grapes, and nuts, $399,531 . Japanese beetle control : For the control and prevention of spread of the Japanese beetle, $35 0,000. Mexican fruit fly control : For the control and prevention of spre ad of the M exica n frui t fly, incl uding neces sary surve ys and control operations in Mexico in cooperation with the Mexican Gov- ernment or local Mexican authorities, $140,460. Citrus-canker eradication : For determining and applying such meth ods of era dication o r control of the dis ease of ci trus trees known as " citrus canker " as in the judgment of the Secretary of Agricul- ture may be necessary, including cooperation with such authorities of the States concerned, organizations of growers, or individuals, as