[1920.] 



92 



RICKARD, T. A. See Deinkee, H. S. 

 RIEDL, E. Obit.— See Deegee, J., 2. 



RIES, H. High-Grade Clays of the United States. [Abstract.] Bull. Geol. 



Soc. Am. xxx. pp. 95-96. 1920. 

 RIMANN, E. Beitrag zur Geologie von Deutsch-Siidwest-Afrika. Zeitschr. 



deutscli. geol. Gesellsch. lxviii. Abh. pp. 327-343, tig., pis. xxv-xxvii. 1916. 

 RITCHIE, A. E. The Kent Coalfield; its Evolution and Development. Pp. i-ix, 



1-309, figs., sketch-maps & sections. 8vo. London, 1919. 

 ROBERT, M. Une Periode glaciaire post-permienne dans 1' Angola. Ann. Soc. 



geol. Belg. xlii. Congo-beige, pp. 29-31. 1920. 

 ROBERTS, C. H. Investigations of the Flows of the River Dee, Scotland. Trans. 



Inst. Water Eng. xxiv. pp. 60-71, tigs., pis. i & ii. 1920. 

 ROBERTSON, T. See Macgeegoe, M.. 2. 



ROBINSON, A. H. A. Investigation of Pyrites Resources [of Eastern Canada]. 



Summ. Bep. Mines Branch, Canada, 1918, pp. 13-46. 1920. 

 ROBINSON, H. H. See Baeeell, J. 



ROBINSON, J. W. D. The Devonian of Ferques (Lower Boulonnais). Abs. Proc. 



Geol. Soc. 1919-1920, pp. 66-67. 1920. 

 ROBINSON, W. I. The Relationship of the Tetracoralla to the Hexacoralla. 



Trans. Connect. Acad. xxi. pp. 145-200, figs., pi. i. 1917. 

 ROBSON, S. A Conglomerate under the Boulder Clay of the Sunderland District. 



Proc. Univ. Durham Phil. Soc. v. pp. 155-156, fig. 1914. 

 RODIGHIERO, A. II Neocomiano dei Dintorni di Gallio (Sette Communi). 



Atti Accad. Veneto-Trentino-Istriana, viii. pp. 117-122. 1915. A.C. 

 R(ERDAM, K. Japetus Steensteup og Kokkenmoddingerne, en historisk 



Redegorelse. e Mindeskr. Japetus Steenstrups Fodsel,' Copenhagen, no. vii. 



pp. 1-20. 1914. 

 ■ . See also Steensteup, Japetus. 



ROGERS, A. F. Colemanite pseudomorphous after Inyoite from Death Valley, 



California. Am. 3Iin. iv. pp. 135-139, rigs., pi. xv. 1919. 

 — — ■ 2. Contact-Metamorphic Deposit at the Mountain Lake Mine near Salt Lake 



City, Utah. [Abstract, J Bull. Geol. Soc. Am. xxxi. p. 162. 1920. 

 ROGERS, A. W. Summary of a Geological Survey of Part of Namaqualand. 



Ann. Pep. Geol. Sm-v. S. Afr. 1913. pp. 79-81. 1*914. 

 ROGERS, G. S. The Cleveland Gas Field, Cuyahoga County, Ohio, with a Study 



of Rock Pressure. Bull. U.S. Geol. Surv. no. 661, pp. 1-68, figs., pis. i & ii 



[maps]. 1917. 



2. Baked Shale and Slag formed by the Burning of Coal Beds. Prof. Papers, 



U.S. Geol. Surv. no. 108, pp. 1-10, pis. i-iii. 1917. 

 3. The Sunset-Midway Oil Field, California. Part II. — Geochemical Relations 



of the Oil, Gas, and Water. Prof. Papers, U.S. Geol. Surv. no. 117, pp. 1-103, 



figs., pis. i & ii. 1919. 

 ■ . Obit.—See Kemp, J. F., 2. 



ROIG, M. S. Escualidos del Mioce.no y Plioceno de la Habana. Bol. Minas, 



Cuba, no. 6, pp. 1-16, 12 pis. 1920. A.C. 

 2. La Fauna Jur&sica de Vinales. Boletin Especial, Seer. Agric, Cuba, 



pp. 1-61, pis. i-xxiii. 1920. A.C. 

 ROLLAND, A. Sur l'Existence de Formes de Terrain appelees ' Rideaux ' dans 



le Cantal. C. B. Acad. Set., Paris, clxxi. pp. 1008-1009. 1920. 

 ROMIEUX, — . Sur les Nappes alluviales du Lot aux Environs de Fumel. C. B. 



Acad. Sci., Paris, clxx. pp. 272-274. 1920. 

 ROPER, Ida M. Local Coast-Erosion and its Cure. Ann. Bep. $f Broc. Bristol 



Nat. Soc. v. pp. 46-51, 1 pi. 1919. 

 ROSBERG. J. E. Die Zergliederung der Scharen Finnlands. Medd. Geogr. 



Fpren. Finland, xi. pp. 1-16, fig. 1918. 

 ROSEN, S. Ueber einige neue Problematica in einem fossilfiihrenden Kalkstein 



aus dem nordschwedischen Hochsjebirge. Bull. Geol. Inst. Univ. Upsala, 



xvi. pp. 159-168, figs. 1919. And A.C. 

 ROSENLUNI), A. L. Om Dannelsen av Nikkelmagnetkisforekomster med specielt 



Henblik paa Erteliforekomsterne. [Abstract.] Norsk geol. Tidsskr. iv. pp. 40- 



41. 1916. 



ROSIWAL, A. Neuere Ergebnisse der Hartebestimmung von Mineralien und 

 Gesteinen. — Em absolutes Mass fur die Harte sproder Korper. Verh. k.-k. 

 geol. Beichsanst., Wien, 1916, pp. 117-147. 1916. 



2. Professor Feanz Toula. [Obit.] Verh. geol. Staatsanst., Wien, 1920, 



pp. 41-49. 1920. 



ROSS, C. S. See Laesek, E. S., 3. 



