SEVENTY-FIRST C ONGRESS . SESs . III. CH. 280. 1931 . of the visiting committee ; expenses of attendance of American mem- ber at the meeting of the International Committee of Weights and Measu res ; purch ase of gloves , goggles, rub ber boots, an d aprons ; supplies for operation, maintenance, and repair of passenger automo- biles and motor trucks for official use, including their exchange ; and contingencies of all kinds, $64,000 . Improvement and care of grounds : For grading, construction of roads and walks, piping grounds for water supply, lamps, wiring for lighting purposes, and other expenses incident to the improvement and care of grounds, including foreman and laborers in the District of Columbia, $14,400 . Testing structural materials : For continuation of the investigation of structural materials, such as stone, clays, cement, and so forth, including personal services in the District of Columbia and in the field, $333,200 : Provided, That as much of this sum as necessary shall be used to collect and disseminate such scientific, practical, and statis- tical information as may be procured, showing or tending to show approved methods in building, planning and construction, standard- ization, and adaptability of structural units, including building materials and codes, economy in the manufacture and utilization of building materials and supplies, and such other matters as many tend to encourage , improve, an d cheapen con struction and housing . T esting machi nes : For maintenance and operation of testing machines, including personal service in connection therewith in the District of Columbia and in the field, for the determination by the Bureau of Standards of the physical constants and the properties of materials as authorized by law, $54,700 . Investigation of fire-resisting properties : For investigation of fire-resisting properties of building materials and conditions under which they may be most efficiently used, and for the standardization of types of appliances for fire prevention, including personal services in the District of Columbia and in the field, $34,820 . Investigation of public-utility standards : For investigation of the standards of practice and methods of measurements of public utilities, such as gas, electric light, electric power, water, telephone, central station heating, and electric railway service, and the solution of the problems which arise in connection with standards in such service, including personal services in the District of Columbia and in the field, $106,570 . Tes ting miscellaneous materials : For testing miscellaneous materials, such as varnish materials, soap materials, inks, and chemi- cals, including supplies for the Government departments and inde- pendent establishments, including personal services in the District of Columbia and in the field, as authorized by law, $46,160 . Radio research : For investigation and standardization of methods and instruments employed in radio communication, including per- sonal service s in t he Dist rict of Colum bia and in the field , $85,2 80 . Color standardization : To develop color standards and methods of manufacture and of color measurements, with special reference to their industrial use in standardization and specification of colorants, such as dyes tuffs, inks, and pigments, and other pro ducts, paint, paper, and textiles, in which color is a pertinent property, including personal services in the District of Columbia and in the field, $15,680. Investigation of clay products : To study methods of measurement and technical processes used in the manufacture of pottery, brick, tile, terra cotta, and other clay products, and the study of the prop- erties of the materials used in that industry, including personal serv- ices in the District of Columbia and in the field, $48,760 ; 1337 Int ern at ion al Co m- mittee of Weights and Measures . Care, etc., of grounds. Structural materials investigatio ns . Services in the Dis- trict . Proviso. Disseminati ng infor- mation as to housing, etc . Testing mac hines for physical constants . Fire -resi stin g bui ld- ing materials . Services in the Dis- trict . Public ut ilities standards, et c ., inves - tigations . Testing miscellane- ous materials. Radio standardiza- tion . Industria l color standardization . Clay products proc- esses.
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