SIXTY·SIXTH CONGRESS. Sess. III. Cris. 124. 1921. 1301 in connection with standardization, testing, or other official work of the bureau); street car fares not exceeding $100; expenses of the visiting committee; expenses of attendance of American member at the meeting of the International Committee of Weights and Measures; rnamaaonai cam. supplies for operation, maintenance, and repair of passenger auto- ‘V°*8h*”¤d mobiles and motor trucks for official use, including their exchange; ` and contin encies of all kinds, $75,000. For gra<§ng, construction of roads and walks, piping grounds for C°”°°’g'°“”dS' water supply, lamps, wiring for lighting purposes, and other ex enses incident to the im rovement and care o grounds, including laborers in the District of Cblumbia, $10,000. _ For continuation of the investigation of structural materials, such r¤§g`€i,§fii?,ii§i°°t°rm]s as stone, clays, cement, and so forth, including personal services in the District of Columbia and in the Held, $125,000. _ _ For maintenance and operation of testing machines, including pri§»°£ELIii7.i”Er`§Yfirxi§?‘°l personal services 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, $30,000. my . t. bum For investigation of fire resisting properties of building materials arg miié°£1$fg ` and conditions under which they may be most efficiently used, and for the standardization of types of appliances for fire prevention, iéruilpding personal services in the District of Columbia and in the e , $25,000. For investigation of the standards of practice and methods of ,,u°{§§§’§}‘u‘§§§?“° M 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 Held, $85,000, of which sum $15,000 shall be immediately available for electrolysis investigations. _ _ For tesf miscellaneous materials, such as varnish materials, ,,,§°§f,,‘§‘§,,,,,,’“fS§‘§’};““°' soap materliils, inks, and chemicals, including supplies for the Government departments and independent establishments, including personal services in the District of Columbia and in the field, as authorized by law, $30,000. R ,. . For investigation and standardization of methods and instruments rioiraiigrrdcsriiliiliiiiii employed in radio communication, including personal services in the District of Columbia and in the field, $30,000. I I t , I I To develop color standards and methods of manufacture and of smY(i.#rii¤iriZ¤.°° m color measurement, with special reference to their industrial use in standardization and specification of colorants such as dyestuffs, inks, and pigments, and other products, paint, paper, and textiles, in which color is a ertinent property, including personal services in the District of (lblumbia and ID the field, $10,000. To stud methods of measurement and technical processes used in esgelgy pmum pr°°` the manuflacture of pottery, brick, tile, terra cotta, and other clay products, and the study of the properties of the materials used in that industry, including personal services in the District of Columbia and in the field, $25,000. `mmum, ew To develop methods of testing and standardizing machines, motors, engineering miwsagil tools, measuringx instruments, and other apparatus and devices used “°'“‘ in mechanical, iydraulic, and aeronautic enginee ; for the comparative study o types of apparatus and methodsniifoperation, and or the establishment of stan ards of performance; for the accurate determination of fundamental physical constants involved in the proper execution of this work ;_ and for the scientific experiments and investigations needed in solving the problems which may arise in connection therewith, especially in response to the requirements of aeronautics and aviation for information of a purely scientific nature,
