55. Made surveys of all promising dam sites along Colorado River from Lees Ferry to the lower end of Black Canyon and began the preparation of a report showing the results of the work done.

56. Made examinations of power sites, proposed power developments, the power value of streams and lands, and the use of water for power and irrigation in eight States, these examinations including several items of work done for the Federal Power Commission.

57. Continued examinations of public lands for classification under the enlarged and stock-raising homestead laws, performing such work in 18 States and covering areas embraced in about 2,000 applications.

58. Classified 1,812,685 acres of public land as coal land and 4,105 acres as oil land and made other classifications involving a net decrease of 2,998,210 acres in areas withdrawn as possible coal land and of 421,723 acres in areas withdrawn as possible oil land.

59. Reported on 14,782 cases arising under the administration of the public-land laws.

60. Reported on 6,282 applications made for permits, leases, or patents under the mineral-land laws.

61. Recommended the addition of 153,052 acres to the power-site reserves and the elimination of 58,537 acres.

62. Increased the area withdrawn under the Nevada ground-water reclamation act from 1,300,940 acres to 1,425,060 acres.

63. Recommended designations involving 1,379,449 acres of land available for settlement under the enlarged-homestead acts and the cancellation of designations involving 12,379 acres.

64. Recommended the addition of 107,384 acres to the public water reserves and the elimination of 6,783 acres.

65. Recommended the designation of 1,801,441 acres as stockraising homestead land and the cancellation of designations covering 760 acres.

66. Edited and otherwise prepared for printing 27,981 pages of manuscript, read and corrected 2,306 galley proofs and 15,928 page proofs, and prepared indexes for 25 reports covering 4,455 pages. 67. Prepared for reproduction in reports 4,442 illustrations.

68. Edited for engraving 90 new topographic maps and for reprint 222 topographic maps, edited 54 plan and profile river survey sheets for photolithographic reproduction and 249 maps for incorporation in Geological Survey reports, and read proofs of 613 maps.

69. Published 114 reports, containing 14,543 pages, in editions of 351,107 copies, 4 geologic folios in editions of 15,485 copies, and 92 new or revised topographic maps and 203 reprinted maps in editions. of 1,339,173 copies.

70. Distributed 521,548 books and pamphlets, 16,681 geologic folios, 923 copies of the World Atlas of Commercial Geology, and

735,573 maps, a total of 1,274,725 publications, of which 617,391 were sold.

71. Engraved and printed 70 new maps and completed the engraving for 32 new maps, photolithographed and printed 92 new maps, made corrections on the engraved plates for 214 maps, and reprinted editions of 193 maps and of 10 corrected State and other photolithographed maps.

72. Printed for other branches of the Government or for incorporation in reports in the Geological Survey 4,655,982 copies of maps, plans, sections, etc., the work involving more than 23,000,000 impressions.

73. Maintained a photographic laboratory, making an output of 11,279 negatives, 1,609 lantern slides, and 111,037 prints.

74. Maintained a geologic library, receiving accessions of 14,655 books, pamphlets, periodicals, and maps, affording facilities for 12,908 readers, and lending for use outside of the library 7,054 books and maps.

75. Received 348,361 letters and other pieces of mail, sent out 883,179 pieces, and handled 3,505 pieces of freight and express, outgoing and incoming.

THE BUREAU OF RECLAMATION

1. Cooperated with the committee of special advisers on reclamation appointed by the Secretary of the Interior to make an intensive and exhaustive analysis of reclamation project operations. The report of the committee was published as Senate Document No. 92, Sixty-eighth Congress, first session.

2. Under the direction of expert coordinators, reorganized the Washington and Denver offices of the bureau with a view to greater efficiency and economy by eliminating unnecessary work, duplication of effort, and other unbusinesslike methods, and by abolishing unnecessary positions, resulting in an annual saving of $103,000.

3. Reassigned the work of the bureau, confining the engineering work to the chief engineer; matters pertaining to settlement, crop production, industrial betterments, and other questions dealing with the farmers, to the director of farm economics; and financial matters to the director of finance; the three division heads working under the direct supervision of the commissioner.

4. Abolished the positions of Assistant Commissioner and chief counsel and the position of chief accountant and centralized the accounting work of the bureau in Denver.

5. Terminated the services of 15 consulting engineers who had been carried on the rolls of the bureau at salaries ranging from $9 to $50 per day when actually employed.

6. In accordance with the recommendation of the President, advocated a bill to grant relief to water users on the projects by extension of time of payments due on the charges for operation and maintenance and construction. The bill was passed and its provisions put into operation immediately, with resulting benefit to the water users.

7. Initiated and continued investigations of a large number of new projects to determine their feasibility, chief among which are the Kittitas division of the Yakima project in Washington; the Baker, Vale, and Owyhee projects in Oregon; the Spanish Springs extension of the Newlands project in Nevada; the Weber-Provo division of the Salt Lake Basin project in Utah; and the Guernsey Reservoir on the North Platte project in Wyoming.

8. Initiated studies of settlement and colonization conditions in this and other countries with a view to adopting the best settlement plans for Federal irrigation projects.

9. Continued the investigation of the Colorado River Basin, looking to storage and control of the river, on the engineering features of which a voluminous report was prepared.

10. Continued investigations of the feasibility of the Columbia Basin development, a report on which was prepared supplementing previous studies by the State of Washington.

11. Continued preliminary work in connection with the proposed American Falls Dam on Snake River, Idaho.

12. Virtually completed the Tieton Dam on the Yakima project, Washington, to be 244 feet high and impound 202,500 acre-feet of water, supplementing the supply for the Yakima project and proposed extensions.

13. Virtually completed the Black Canyon Dam, in Idaho, 183 feet high, to divert water from Payette River, for the irrigation of lands in the Emmett irrigation district and possible extensions of the Boise project.

14. Began construction of the McKay Dam for the development of the greater Umatilla project, Oregon; and of the Gerber Dam on the Klamath project, Oregon-California.

THE BUREAU OF MINES

1. Rendered assistance at 25 accidents, 22 of these being in coal mines and 3 in metal mines.

2. Trained 17,767 men in first aid and mine rescue, an increase of 2,826 over the number trained in the previous year.

3. Carried on an intensive campaign which has resulted in many coal mines adopting rock dusting as a preventive of disastrous explosions.

4. Made a survey of the sources of limestone, gypsum, and anhydrite available near coal mines for making rock dust, and issued specifications for suitable dusts.

5. Developed international cooperation with the mines department of Great Britain in research looking to the reduction of accidents in coal mines.

6. Conducted and assisted at 44 State and local first-aid meets in mining districts.

7. Inspected mine rescue apparatus owned by mining companies and advised on its conditions and the repairs needed.

8. Continued to extend safety training in the oil industry.

9. Enlarged the library of industrial motion pictures and exhibited to over 1,239,000 people more than 500 sets of films, costing over $1,000,000.

10. Issued statistical reports on accidents at coal mines, metal mines, quarries, coke ovens, and metallurgical plants in connection with mine-safety work.

11. Investigated all of the coal-mine explosions that occurred in the United States during the year, and made special reports on the specific cause and the precautions necessary to prevent a repetition.

12. Developed a "self-rescuer" mask for use by miners as a life saver when caught in gas after a fire or explosion.

13. Carried on an intensive safety campaign in the oil industry. 14. In cooperation with manufacturers of gas appliances and the Bureau of Standards, developed a natural-gas heater that is free from carbon monoxide under ordinary gas pressures.

15. Practically completed an extensive study of dust, ventilation, and humidity conditions in metal mines, yielding fundamental data on the relation to comfort and health of the men.

16. Developed a standard test for determining fineness of pulverized coal, completed combustion tests on efficiency of a large power plant using pulverized coal, and finished an investigation of explosion hazards in the handling and use of powdered coal.

17. Conducted tests to learn the most efficient methods of blasting coal so as to produce the most lump coal with the least explosive, and issued recommendations that have been tested out in several large mines in Pennsylvania with satisfactory results.

18. Completed a survey of ash content in anthracite as marketed in Massachusetts, selected as a typical State, which showed that the ash averaged 13 to 19 per cent.

19. Conducted experiments on gasoline storage tanks which demonstrated the most effective methods of construction for preventing loss by evaporation.

20. Continued to cooperate with oil-well operators by advising as to the best method of drilling and casing wells.

21. Completed surveys in the Fox-Graham oil fields and the Lyons-Quinn field in Oklahoma, which have shown the depths and relations of the oil, gas, and water bearing sands, so that the operator can drill and case his wells with the minimum of guesswork.

22. Completed a study of oil-field emulsions and showed that much. of the present waste of oil in emulsion can be avoided by use of improved methods.

23. Obtained detailed information on methods of pumping oil in various fields, which many operators are putting into use to reduce pumping costs.

24. Developed a fractionating column for crude oil distillation which is more efficient than those now in use and simplifies the process of distillation.

25. Completed tests of burning, fuel, and lubricating oils from Pacific coast crudes, which show that with few exceptions they meet the standard Federal specifications.

26. Developed in cooperation with the Army and Navy Air Services a helium plant that produces the gas more cheaply than any plant hitherto constructed.

27. Demonstrated that a good grade of foundry iron can be produced from steel scrap in the electric furnace, an achievement of special importance to the development of an iron industry in the Pacific coast States.

28. Improved the bureau's sponge-iron furnace so that almost any type of iron ore can be smelted in it to make sponge iron.

29. Blew in a new experimental blast furnace which is bigger and better than the one successfully operated last year.

30. Obtained comprehensive data on briquetting practice in the retorting of zinc ores, which will enable a zinc operator to select the process and the type of briquet best suited to his purpose.

31. Made a thorough study of methods of retorting the residues from zinc smelters, which residues carry 5 to 15 per cent of the zinc charged.

32. Studied the losses in copper smelter slags, and mapped out a program for a determined attack on this problem.

33. Finished a comprehensive survey of ore-dressing practice in the United States, in cooperation with the Institute of Mining and Metallurgical Engineers.

34. Developed a process for preparing solutions of ferric sulphate, an effective agent for leaching certain ores.

35. Developed an efficient classifier for treating complex lead-zinc ores, which is being used in several large western mills treating ores of this type.