SIXTY-EIGHTH CONGRESS. Sess. II. Ch. 364. 1925. 1041 lic, and aeronautic engineering; for me comparative study of types of apparatus and methods of operation, and for the establishment 0 standards 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 re uirements of aeronautics and aviation for information of a purdly scientiHc nature, including personal services in the District of Columbia and in the §ervices in the ms. Held, $27,800, of which amount not to exceed $25,580 may be ex- °"°°‘ pended for personal services in the District of Columbia. Investigation of optical glass: For the investigation of the prob- ,;°?,?“°°l“]““°'°d“° lems involved in the production of optical glass, including personal services in the District of Columbia and in the Held, $20,520, of guvim in th., Di,. which amount not to exceed $14,160 may be expended for personal *"*°*· services in the District of Columbia. Investigation of textiles: To investigate textiles, pa er, leather, s¤§{,},ili°i?8$'§?”'°t°" and rubber in order to develop standards of quality andp methods of measurement, including personal services in the District of Columbia and in the Held, $26,560, of which amount not to exceed $23,140 ,,,Sc§f"°°“ i" “‘° DiS' may be expended for personal services in the District of Columbia. S _ Sugar standardization: For the standardization and design of tioullgar s°°md°"m°` sugar-testing apparatus; the development of technical specifications for the various grades of sugars, with particular reference to urgent problems made pressing by conditions following the war, especially mvolvinfg the standardization and manufacture of sugars; for the study 0 the technical problems incidental to the collection of the revenue on sugar and to determine the fundamental scientiHc constants of sugars and other substances; for the standardization and ,,f,‘§§f’ ‘“‘° “““’““l production of rare and unusual types of sugars re uired for the ‘ medical service of the Government departments; and (lor other technical and scientiHc purposes, including personal services in the District of Columbia and in the Held, $38,160, of which amoimt not to m2,°f'*°°“ “‘ “‘° °“° exceed $32,220 may be expended for personal services in the District of Columbia. Gauge standardization: To provide by cooperation of the Bureau “.?,'§‘Q,,‘Y° ‘“d ’°'°' of Standards, the War Department, and the Navy Department for ·gp,_ ¤*·¤°· the standardization and testing of the standard gauges, screw ' threads, and standards required in manufacturing throughout the United States, and to calibrate and test such standard gau(ges, screw threads, and standards, including necessary equipment an personal services in the District of Columbia and in the field, $38,320, of $,,,4,,, in me DL,. which amount not to exceed $36,180 may be expended for personal ¤‘*°*- services in the District of Columbia. _ Cm, weighing M Investigation of mine scales and cars: For investigating the con- at mms. ” ditions and methods of use of scales and mine cars used for weighing and measuring coal dug bg miners, for the purpose of determining wages due, and of con itions affecting the accuracy of the weighing or measuring of coal at the mines, including personal services in the District of Columbia and in the Held, 14,540, of swims in me my which amount not to exceed $11,340 may be expended for personal ¤·;,,t_ services in the District of Columbia. _ Mmuumml m_ Metallurgical research: For metallurgical research, including alloy meta, steels, foundry practice, and standards for metals and sands; casting, rolling, forging, and the properties of aluminum alloys; prevention of corrosion of metals and alloys; development of metal substitutes, as for platinum; behavior of bearing metals; preparation of metal speciHcations; investigation of new metallurgical processes and study of methods of conservation 111 metallurgical
