SIXTY-EIGHTH CONGRESS. Sess. II. Ch. 462. 1925. 1].73 For geologic surveys in the various portions of the United States, °°°‘°¤*° S“"’°”· $325,000, of which amount not to exceed $11,840 may be used for ° work in volcanology in the Hawaiian Islands and not to exceed $272,700 may be expended for personal services in the District of Columbia; enemies me pays. For chemical and physical researches relating to the geology of *°°' ‘°°°°'°*‘°‘· the United States, including researches with a view of determining geological conditions favorable to the presence of deposits of otash P°°“*’ ’°“”· salts, $40,000, of which amount not to exceed $36,000 may be expended for personal services in the District of Columbia; Aim, ,,.;.,.,,,1 N. For continuation of the investigation of the mineral resources of “°‘”°°°· Alaska, $72,000, to be available immediately, of which amount not to exceed $47 ,400 may be expended for personal services in the Distri§t of Columbia; d d h W be I in or gaugin streams an eterminin the water su l of the - "‘ "““”’ "°°' United Stateg the investigation of gnderground ClE)I'I;'(g1tS and muon artesian wells, and the preparation of reports upon the best methods of utilizin the water resources, $165,000, of which amount not to exceed $71§30 may be expended for personal services in the District Ammwem of Columbia, and of which $25,000 may be used to test the existence ` of artesianhand egherdundergrcéund wateii) sutpplies suifgble for irriation in the ari an semiari regions oring we ; . g For the examination and classiiicationyof lands requisite to the etiikiigédiymiiegeiig determination of their suitability for enlarged homesteads, stock- S ”m°g’°°” raising homesteads, public watering places, and stock driveways, or other uses, as required by the public land laws, $265,000, of which amount not to exceed $175,000 may be expended for personal services in the District of Columbia; Mlm For engraving and fprinting geologic mafps, $105,000; For preparation 0 the illustrations o the Geological Survey, m'”°"°°"" $18,000; For preparation of the reports of the mineral resources of the United States, including special statistical inquiries as to production, distribution, and consumption of the essential minerals, $123,000, of which amount not to exceed $94,000 may be expended for personal services in the District of Columbia; Total, United States Geological Survey, $1,652,760. BUREAU or Mmns M*····”°*•·* sxnaiuns Arm onnnxan nxrmzsns °°“°”l °“’°°’°°‘ For general expenses, including pay of the director and necessary ,,,,{§’$,,°,‘§Q§’;,,‘§{P§2,_“° assistants, clerks, and other employees, in the office in the _District ·*¤*··v·¤*’» of Columbia, and in the field, and every other expense requisite for and incident to the general work of the bureau in the District of Columbia, and in the field, to be expended under the direction of the Secretary of the Interior, $86,000, of which amount not to exceed $7 7 ,900 may be expended for personal services in the District of Columbia; _ _ For investigations as to the causes of mine explosions, methods ,,},’§§,§‘§,‘,§,Ff‘§‘,§‘,_‘ ‘““‘° of mining, especially in relation to the safety 0 miners, the appliances best adapted to prevent accidents, the possible improvement of conditions under which mining operations are carried on, the use of explosives and electricity, the prevention of accidents, and other inquiries and technologic investigations pertinent to the mining m- dustry, including all equipment, supplies, and expenses of travel and subsistence, $400.000, of which amount not to exceed $58,000 mcS§_"*°“*¤‘h° mt may be expended for personal services in the District of Columbia;
