S>9 21 -] 



30 



EAKIN. H. M. The Yukon-Koyukuk Region, Alaska. Bull. U.S. Geol. Sunt. 

 no. 631, pp. 1-88, figs. pis. i-x [maps]. 1916. 



EAKLE, A. S. Jurupaite— a New Mineral. Am. Min, vi. pp. 107-109. 1921. 



EARLE, K. W. The Lower Carboniferous Rocks of West Cumberland. Abs. Proc. 

 Geol, Soc. 1921-22, pp. 9-10. 1921. 



EASTWOOD, T. The Lead and Zinc Ores of the Lake District. Mem, Geol. Surv. 

 Gr. Br., Mill. JRes. xxii. pp. 1-54, figs, i geol. map j5 pi. i. 1921. 



EATON", H. N. The Oriskany Sandstone Faunule at^Oriskany Falls, New York. 

 Am. Journ. Sci. ser. 5, i. pp. 427-430. 1921. 



EBERT, F. C. Records of Water-Levels in Wells in Southern California. Water- 

 Supply Papers, U.S. Geol. Surv. no. 468, pp. 1-156, fig. pis. i-iv. 1921. 



ECKERMANN, PL vox. Kalkforekomsten vid Mansion och des Kontactmineral. 

 Geol, Poren. Stockh. Pbrh. xliii. pp. 4S9-495. 1921. 



EDDING FIELD, F. See Haedee. E. C. 



EDE, J. A. Mineral Resources of the La Salle District. Trans. Am. Inst. 21. P. 



lxiii. pp. 244-265, figs. 1920. 

 FDEL, G. Gang^esteine des Laacher Sees. Sitzb. naturh. Yer. preuss. Pheinl. 



1913, pp. A 40-48. 1914. 

 2. Petro^raphische Untersuchnng heller und dunkler, zum Ganggefolge von 



Alkalisyeniten gehorender Auswurflinge des Laacher-Seegebietes. Verh. naturh. 



Ver. preuss. Pheinl, lxxi. pp. 72-135. 1915. 

 EDWARDS, E. C. See Twexhofel, W. H., 2. 



EDWARDS, F. W. A Note on the Dipterous Subfamily Ditomyina 3 , with Descrip- 

 tions of new Recent and Fossil Forms. Ann. JIag. JS'at. Hist. ser. 9, vii. 

 pp. 431-437. 1921. 



2. A Note on the Subfamily Bruchomyiina? (Diptera Nematocera). Ibid. 



pp. 437-439, fig. 1921. 

 EDWARDS, W. N. On a small Rennettitalean Flower from the Wealden of 



Sussex. Ihid. pp. 440-442, pi. xii. 1921. 



2. Note on Parla decipiens. Ihid, pp. 442-444, fig. pi. xii. 1921. 



3. Visit to the Gallery of Fossil Plants, British Museum (Natural History). 



Proc. Geol. Assoc. xxxii. pp. 177-179. 192L 

 EHLERS, G. M. Niagaran Hocks of the Northern Peninsula of Michigan. 



[Abstract,] Bull. Geol. Soc. Am, xxxii. pp. 129-130. 1921. 

 EHRINGHAUS, A. Beitrage zur Kenntnis der Dispersion der Doppelbrechung 



einiger Kristalle. Keues Jahrb. f. Mill. Beilage, xii. pp. 342-419, figs. 1916. 

 2. Leber Dispersion der Doppelbrechung bei Kristallen. Ibid, xliii. pp. 557- 



618, figs. 1920. 



3. Ueber Dispersion der Doppelbrechung. Zeitschr.f. Krist. 1 vi. pp. 418-419. 



1921. 



EHRMANN, F. Sur un important Mouvement orogeniqueau Debut du Cretacique 



dans la Kabvlie des Babors. C. B. Acad, Sci. Paris, clxxii. pp. 860-861. 1921. 



2. Le Trias de la Kabvlie des Babors (Algerie). Ibid. pp. 1194-1195. 1921. 



3, & J. Savoexix. Echelle stratigraphique de la Kabvlie des Babors. Ibid. 



pp. 1301-1304. 1921. 

 EITEL, W. Die Grenzen der Mischkristallbildung in den Mineralien der Epidot- 



gruppe. — II. Neues Jahrb.f. Min. Beilage, xlii. pp. 223-271, figs. 1918. 

 ■ ■ 2. Untersuchunaen fiber magmatische Yielstoff^-steme. Ibid. xliv. pp. 369- 



401, tigs. 1921. 



3. Leber die polvnare Mischbarkeit der Granatmineralien. Zeitschr. f. 



Krist. lvi pp. 526-531, figs. 1921. 

 4. Hexdrik Exxo Boeke, 1881-1918. [Obit.] Ber. SencTcenberg. nalurf. 



Gesellsch, li. pp. 67-71. 1921. 

 5, W. Ieiiee, & L. Yelde. Das Yorkommen tellurischen Eisens im Rasalte 



des Buhls bei Kassel, seine Begleitmineralien und Genesis. AbJi. Senckenberg. 



naturf. Gesellsch. xxxvii. pp. 83-176. figs. pis. iv-xv. 1920. 

 ELBER, R. Geologie der Raimeux- und der Yelleratkette im Gebiete der Durch- 



bfuchtaler von Birs und G^biare (Berner Jura). Verh. naturf. Gesellsch. 



Basel, xxxii. pp. 38-93, pis. iii v [geol. map & sections]. 1921. 

 FLLES (Miss) G. L. The Bala Country : its Structure and Rock-Succession. 



Abs. Proc. Geol. Soc. 1920-21. pp. 65-69. 1921. 

 ELLSWOR TH, H. V. See Poitevix, E. 



ELSDEN J. V., & J. A. Howe. The Stones of London. Quarry, xxvi. pp 48-51, 

 88-92. 131-134, 174-177, 223-225, 267-269, 305-308, 347-350. 3*9-391,430- 

 43:", 475-479, figs. 1921. 



FLWORTHY. li. T. Aluminium and its Sources. Summ. Pep. Jl'mes Branch 

 Canada, 1919, pp. 109-113. 1920. 



