. No.

(The dates of publication of the separate chapters are given in parentheses)

Page

1

Sulphur and pyrites, by H. M. Meyer (Apr. 21, 1924)

Magnesium and its compounds, by J. M. Hill and G. F. Loughlin (July

28, 1924)..

23

Strontium, by G. W. Stose (July 19, 1924).

27

Fluorspar and cryolite, by H. W. Davis (July 25, 1924)-

Fuel briquets, by W. F. McKenney (Sept. 26, 1924).

49

Slate, by G. F. Loughlin and A. T. Coons (Sept. 25, 1924)

63

Gypsum, by K. W. Cottrell (Sept. 27, 1924)

69

Peat, by K. W. Cottrell (Sept. 27, 1924)

71

Clay, by Jefferson Middleton (Oct. 13, 1924)

Barytes and barium products, by C. E. Siebenthal and E. R. Phillips

(Oct. 16, 1924)--

79

Carbon black produced from natural gas, by G. B. Richardson (Sept. 29,

1924).

89

91

Graphite, by Jefferson Middleton (Oct. 17, 1924)

99

Fuller's earth, by Jefferson Middleton (Oct. 17, 1924).

Mineral waters, by W. D. Collins (Nov. 6, 1924)

109

Salt, bromine, and calcium chloride, by K. W. Cottrell (Oct. 18, 1924).. 125

Asphalt and related bitumens, by K. W. Cottrell (Oct. 20, 1924)

135

Mica, by B. H. Stoddard (Oct. 8, 1924)

143

Sand and gravel, by A. T. Coons (Nov. 5, 1924)

149

Talc and soapstone, by B. H. Stoddard (Nov. 6, 1924).

161

Potash, by G. R. Mansfield and Leona Boardman (Dec. 12, 1924).

167

Stone, by G. F. Loughlin and A. T. Coons (Dec. 18, 1924)

205

Silica, by F. J. Katz (Nov. 28, 1924)

235

Phosphate rock, by G. R. Mansfield (Dec. 20, 1924)

239

Lime, by G. F. Loughlin and A. T. Coons (Dec. 19, 1924)

275

Feldspar, by Jefferson Middleton (Dec. 22, 1924) -

285

Cement, by E. F. Burchard and B. W. Bagley (Dec. 26, 1924).

293

Abrasive materials, by F..J. Katz (Jan. 28, 1925) -

327

Asbestos, by Edward Sampson (Feb. 9, 1925)-

339

Natural gas, by G. B. Richardson (Mar. 3, 1925).

351

Natural-gas gasoline, by G. B. Richardson (Mar. 28, 1925)--

359

Petroleum, by G. B. Richardson (Aug. 27, 1925) --

365

Coke and by-products, by F. G. Tryon and H. L. Bennit (May 13, 1926)--

427

Coal, by F. G. Tryon and L. Mann (Aug. 30, 1926).-

499

ILLUSTRATIONS

Page

180

180

306

Plate I. Map of western Texas and adjoining territory, showing the

location of wells that have furnished potash data-
II. Depths at which potash has been found in western Texas, per-

centage of potash present, and character of material pene-

trated.

III. Map of United States showing distribution of cement plants.

IV. Production of petroleum in the United States, Russia, Mexico,

and all other countries, 1859–1923.,

V. Production curves of the principal oil-producing States, 1890–

1923.

VI. Monthly fluctuations in output of bituminous coal and in

volume of trade, 1905–1923.

VII. Changes in number of men employed, 1920–1923

370

394

506

553

91908

Page

41

44

46

50

52

53

87

104

113

161

180

286

299

345

359

366

FIGURE 1. Fuel briquets produced in the Eastern, Central, and Pacific

Coast States and in the United States, 1907-1923-

2. Distribution of fuel briquets in 1923.-

3. Location of fuel-briquetting plants in the United States in

relation to coal fields.

4. Quantity of slate sold in the United States, 1891–1923, by

uses, in short tons (approximate), and quantity of stone

granules sold in the United States, 1919–1923, in short tons.-

5. Value of slate sold in the United States, 1891-1923, by uses,

and value of stone granules sold in the United States, 1919-

1923.---

6. Total sales of mill stock and of classes of mill stock for which

figures are available, 1890–1923, in square feet--

7. Weekly quoted prices of crude barytes and of barium products

and barium chemicals, 1923.-

8. Production, total value, and average value per ton of fuller's

earth from 1895 to 1923...

9. Number of commercial springs, annual production, total value,

and average value per gallon of mineral waters in the United

States reported from 1883 to 1923..

10. Talc and soapstone produced in the United States, 1880–1923.

11. Map of the United States, showing the location of the Texas

potash field and of other sources of potash --

12. Crude feldspar produced in the United States, 1907–1923.

13. Monthly fluctuations in production, shipments, and stocks of

finished Portland cement, 1922 and 1923-

14. Prices of Canadian asbestos “crude” and “fiber,” f. o. b.

Quebec, 1920–1923..

15. Natural-gas gasoline produced, total quantity of natural gas

consumed, and portion treated for the extraction of gaso-

line, 1911-1923.-

16. Crude petroleum produced, imported, exported, and delivered

to consumers in the United States, 1909–1923.

17. Pipe-line and tank-farm stocks of crude petroleum contrasted

with indicated days' supply, 1917–1923--

18. Daily average production of petroleum, production plus im

ports, and indicated deliveries to domestic consumers plus

exports, by months, 1919–1923..

19. Supply and demand for crude petroleum contrasted with price

of Oklahoma-Kansas grade crude petroleum, 1918-1923..

20. Energy equivalent of coal, petroleum, and natural gas, 1882-

1923.

21. Oil wells completed in the United States, price of Oklahoma-

Kansas grade crude petroleum, and daily average produc-

tion of petroleum, by months, 1918-1923.

22. Production of bituminous coal compared to consumption and

exports, 1916-1923..

23. Bituminous coal and anthracite produced, 1890–1923.

24. Average production of soft coal per working day for each

week, 1921-1923.-

25. Total commercial stocks of bituminous coal, October 1, 1916,

to January 1, 1924 ..

26. Monthly production and consumption of soft coal in 1923..

27. Monthly changes in stocks in 1923 -

28. Monthly average spot prices of bituminous coal f. o. b. mines,

1923...

29. Per cent of idle, part-time, and full-time mines in nine repre-

sentative weeks, 1922–1924.--

30. Monthly prices of anthracite f.o. b. mines, 1913-1923-

31. Production, calculated full-time capacity, men employed,

mine price per ton, and average number of days lost at

bituminous-coal mines, 1890–1923

32. Annual production of bituminous coal and line of normal

trend, 1899-1923.--

33. Relative rates of growth of bituminous coal, oil and gas,

water power, and total energy, 1879-1923_

Page

524

533

566

570

573

577

581

589

592

609

613

650

656

FIGURE 34. Percentage of total heat value furnished by each mineral fuel,

1819-1924.

35. Rank of principal States in production of bituminous coal,

1913, 1918, and 1923.-

36. Number of men employed in bituminous-coal mines that

worked specified number of days in 1913, a normal year;

1914, a year of depression; and 1918, the year of maxi-

mum activity -

37. Output of bituminous coal per man underground per day

and average length of established working day, 1911-1923

38. Output of bituminous coal per man employed per day in two

union and two nonunion States and in the United States

as a whole, 1900-1923.

39. Per cent of total bituminous output mined by different

methods, 1911-1923...

40. Bituminous coal produced by undercutting machines and

strip pits, 1891-1923...

41. Tonnage of washed coal and percentage of bituminous coal

output washed, 1906–1923..

42. Relative numbers and production of large and small bitu-

minous coal mines in 1923.

43. Number of commercial mines in each size class, 1905–1923.-

44. Relative number of large and small bituminous-coal pro-

ducing companies in 1920, and number of mines and ton-

nage which they control...

45. Production of coal per working day and trend of spot prices

in Alabama, 1918–1923.

46. Production of coal per working day in Colorado, Utah, and

New Mexico, 1918-1923.

47. Production of coal per working day in Illinois and trend of

spot prices, run-of-mine, in three districts, 1918–1923.-

48. Production of coal per working day in Indiana and trend of

spot prices on fourth and fifth vein coal, 1918–1923--

49. Production of coal per working day in Iowa, Kansas, Missouri,

Arkansas, and Oklahoma, 1918-1923.

50. Production of coal per working day in Kentucky and trend of

spot prices, run-of-mine grade, for eastern and western

Kentucky, 1918–1923.

51. Production of coal per working day in Montana, North

Dakota, Washington, and Wyoming, 1918–1923.

52. Production of coal per working day in Ohio and trend of

spot prices, run-of-inine grade, in No. 8 and Hocking

districts, 1918–1923..

53. Shipments of anthracite, by regions, 1830–1923.

54. Anthracite shipped from breakers, washeries, and dredges,

1890-1923.-

55. Sizes of anthracite shipped from mines and washeries, 1890-

1923.-

56. Percentage of each size in shipments of anthracite from break-

ers, washeries, and dredges, 1923...

57. Production of bituminous coal per working day in Penn-

sylvania and trend of spot prices, run-of-mine grade, in

Pittsburgh, Clearfield, and Somerset districts, 1918–1923..

58. Production of coal per working day in Virginia, Tennessee,

and Maryland, 1918–1923--

59. Production of coal per working day in West Virginia and

trend of spot prices of smokeless and Kanawha, run-of-

mine grades, 1918–1923.

660

665

670

674

685

692

705

711

713

715

724

729

740