64
Pa-2.
Unspecified sample, from farm of D. R. Todd, near Gary; B. I. C. no. 520; no. 1349 a, Schoch, 1918, pp. 82, 192.
Pa-3. Core sample; Martin Lake, Texas Utilities Company; Spl. 1 169, 242" to 350".
Rains County
Ra-1. Outcrop sample; vicinity of Emory; Dumble, 1892, p. 171.
Ra-2. Outcrop sample; 7 miles east of Emory; Dumble, 1892, p. 171.
Robertson County
Ro-1. Mine sample, Central Texas Mining, Manufacturing, and Land Company; Calvert Bluff on Brazos River; T. M. S. no. 1544; no. 1544, Phillips, 1902, pp. 51, 53, and Phillips and Worrell, 1913, pp. 87, 88; no. 1350, Schoch, 1918, pp. 83, 192.
Ro-2. Mine sample, Southwestern Fuel & Manufacturing Company (subsequently Southwestern Fuel Company); no. 26, Phillips and others, 1911, pp. 45, 46; no. 590, Phillips and Worrell, 1913, pp. 202, 203.
Ro-3. Mine sample, Southwestern Fuel & Manufacturing Company; no. 6, Phillips and others, 1911, pp. 105, 106.
Ro-4. Mine sample, Southwestern Fuel & Manufacturing Company; no. 7403, Wright, 1912, p. 29, and Lord and others, 1913, p. 190; Phillips and Worrell, 1913, p. 106; no. 1351, Schoch, 1918, pp. 83, 192.
Ro-5. Mine sample, Southwestern Fuel & Manufacturing Company, Calvert Bluff on Brazos River; no. 7513, Wright, 1912, p. 29.
Ro-6. Mine sample, Southwestern Fuel & Manufacturing Company, Calvert Bluff; no. 7950, Wright, 1912, p. 29.
Ro-7. Average of mine samples, Southwestern Fuel & Manufacturing Company, Calvert Bluff; Wright, 1912, p. 29.
Ro-8. Mine sample, Southwestern Fuel & Manufacturing Company, Calvert Bluff; no. 7404, Lord and others, 1913, p. 190; no. 1352, Schoch, 1918, pp. 83, 192.
Ro-9. Mine sample, new shaft mine, 60 feet deep; Southwestern Fuel Company, Calvert Bluff; seam, 6.5 feet thick; no. 957, Phillips and Worrell, 1913, p. 102; no. 1358, Schoch, 1918, pp. 84, 192.
Ro-10. Car sample, Southwestern Fuel Company, Calvert; shipped to Univ. Texas; screened sample used in test on Belvet Rocking grates; screened through 1 inch, 8%; B. E. G. no. 1750; no. 1360, Schoch, 1918, pp. 84, 192.
Ro-10a. Car sample, as Ro-10; screened through 1 inch on 1/2-inch grate, 32%; B. E. G. no. 1751; no. 1361, Schoch, 1918, pp. 84, 192.
Ro-1 0b. Car sample, as Ro-10; screened through 1/2-inch and on 1/4-inch grate, 20%; B. E. G. no. 1752; no. 1362, Schoch, 1918, pp. 84, 192.
Ro-10c. Car sample, as Ro-10; screened through 1/4-inch and on 1/8-inch grate, 20%; B. E. G. no. 1753; no. 1363, Schoch, 1918, pp.B4, 192.
Ro-10d. Car sample, as Ro-10; screened through 1/8-inch grate, 10%; B. E. G. no. 1754; no. 1364, Schoch, 1918, pp.B4, 192.








