123 



[1922.J 



TSCHERMAK. G. Uebev das Mischunssgesetz der Alkalifreien Alumiuiumaugite. 



Centralbl.f Min. 1915, pp. 225-232. 1915. 

 2. Uebev die moglicben Fehler der Silikatanalysen und das Mischungs- 



gesetz der Alkalifreien Aluminiumaugite. Ibid. 1916, pp. 1-9. 1916. 

 . See also Bceke. H. E., 2. 



TUCAX, F. Ueber eineu Meerschaum aus dem Agrarner Gebirge. Centralbl.f.. 



Min. 1915. pp. 73-77. 1915. 

 TUTTOX. A. E. H. Rotary Polarization of Light. Nature, ex. p. 809. 1922. 

 TWEXHOFEL, TV. H. Fauna! and Sediment Variation in tbe Anticosti Sequence^. 



Bull. Geol. Sv.rv. Canada, no. 33 "Geol. Ser. no. 40], pp. 1-14. 1921. 

 2. Impressions made by Bubbles, Rain-Drops, and other Agencies. Bull.. 



Geol. Soc. Am. xxxii. pp. 359-371. tigs. 1921. 

 TTVITCHELL. M. TV. Our Mineral Industry in 1919 and 1920. Ann. Rep. Dep. 



Conserv. N.J. 1921. pp. 97-105. 1921. 

 TYRRELL, G. TV. A Contribution to tbe Petrograpby of tbe Soutb Sbetland. 



Islands, tbe Palmer Arcbipelago, and the Danco Land Coast, Graham Land, 



Antarctica. Trans. Boy. So<°. Edinb. liii. pp. 57-79. 1922. 

 2. The Pre-Devonian Basement Complex of Central Spitshergen. Ibid. 



pp. 209-229, rigs. pis. i & ii [geol. sketch-map]. 1922. 



UDDEX. J. A. Some Cavern-Deposits in the Permian in West Texas. Bull. 



Geol. Soc. Am. xxxiii. pp. 153-155. 1922. 

 2. Tbe Troup. Texas, Meteorite. Broc. U.S. Nat. Mus. lix. pp. 471-476, 



figs. pis. c & ci. 1922. And A.C. 

 . See also Savage, T. E., 2. 



UGLOW, W. L. Geology of the Xorth Thompson Valley Map-Area, B.C. Sumvi., 

 Bep. Geol. Surv. Canada, 1921, pp. 72a-106a, tigs, [sections], pis. iii & iv. 

 geol. map. 1922. 



• 2. A so-called Bornite-Chalcopvrite Intergrowth from Legate Creek. Pacific. 



B.C. Am. Min. vii. pp. 1-4, figs. 1922. 

 UGOLIXL R. Contribute alio Studio Petrografico dell' Argentina : La Sierra di 



Cordova. Atti Soc. tosc. Sci. not. Mem. xxxiv. pp. 127-141. 1922. 

 UHLIG, J. Mitteilungen aus dem Mineralogischen Institut der Universitat Bonn.. 



23— Ueber einen Manganhaltigen Diopsid aus dem Radautal bei Harzburg.. 



Neues Jahrb.f. Min.. Beilaye-Band. xxxix. pp. 446-449. 1914. 



2. . 24. Der Nephrit von Harzburg. Ibid. pp. 450-481, fig. 1914. 



3. Monazit von Bom Jesus dos Meiras, Provinz Babia, Brasilieu. Centralbl. 



f Min. 1915, pp. 38-44, fig. 1915. 



. See also Brauxs, R.. 14. 



. Obit.— See Brauns, R., 7. 



ULRICH. E. O. Ordovician ' Hvpoparian ' Genera of Trilobites. [Abstract.] 



Bull. Geol. Soc. Am. xxxiii. pp. 205-206. 1922. 

 2. Major Causes of Land- and Sea-Oscillations. Ann. Bep. Smitlison. Inst. 



1920. pp. 321-337. figs. 1922. 

 ULLRICH. E. Beitraare zur Kenntnis der Quarzporpbvre in der Umgebung von 



Oberschonau i. Thiir. Centralbl.f. Min. 1915, pp. 577-589, 606-616. 1915. 

 UNITED STATES. Department of Agriculture. Monthly Bulletin of the 



Hawaiian Volcano Observatory [T. A. Jaggar, Vulcanologist]. [Volcanic 



Conditions. Lava Measurements, and Seismometric Record.] Vol. ix, no. 10, 



pp. 153-168, 2 pis. 8vo. Honolulu, 1921. 

 2. Geological Survey. Forty-second Annual Report of the Director of the 



United States Geological Survey [G. O. Sjiith] to the Secretary of the Interior 



for the Fiscal Year ended June 30, 1921. Pp. 1-108, pi. i. 8vo. Washington, 



1921. 



' 3. . Mineral Resources of tbe United States in 1920. (Preliminary 



Summary.) Pp. 1-123. 8vo. Washington, 1921. 

 ■ 1- . Mineral Resources of the United States, 1917. Part I — (Metals).. 



Pp. 961-980. 8vo. Washington, 1921. 

 5. . . Part II— (Non-Metals). Pp. 1261-1293. 8vo. Washington^ 



1920. 



6. . , 1918. Part I — (Metals). Pp. 7 a-145 a. fi ff . 8vo. Wash- 

 ington, 1921. 



7. . . Part II— (Xon-Metals). Pp. 1529-1557. 8vo. Washington, 



1921. 



8. . , 1919. Part I— (Metals). Pp. 313-792, figs. pis. iii & iv. 



8vo. Washington. 1921-22. 



