[l 9 2I.] 



96 



SOLGER, F. Beobachtungen uber Flugsandbildungen. Zeitschr. deutsch. geol. 

 Geselhch. lxxii. Monatsb. pp. 168-180, figs. 1920. 



2. Die Geschicbte der Chinesiscben Gebirge. Ibid. pp. 210-231, figs. 1921. 



. See also Phillipi, E. 



SOLIGNAC, M. See Depebet, C, 2. 



SOLLAS, W. J. On Saccammina carteri Brady, and tbe Minute Structure of tbe 



Porauainiferal Shell. Quart. Journ. Geol. Soc. lxxvii. pp. 193-212, fiss., pi. vii. 



1921 ; & Abs. Broc. Geol. Soc. 1920-21, pp. 59-60. 1921. 



■ 2. Tbe Age of the Earth. Nature, cviii. pp. 281-283. 1921. 



SOMIGLIANA, C. Sulla Profondita dei Ghiacciai. Atti B. Accad. Lined, 



Bendic. xxx. pt . 1, pp. 291-296. 1921. 

 SOMMERMEIER, L. Der Kartstein und der Kalktuffvon Dreimuhlen bei Eiserfey 



in der Eifel. Verh. naturh. Ver. prenss. Bheinl. lxx. pp. 303-333, figs. [geol. 



sketch-map], pis. v & vi. 1914. 

 SOPW1TH, A. Obit.— See Oldham, R. D., $ Smith, A. 

 SORDELLI, P. Obit.— See Maechi, M. de. 



SOSMAN, R. B. An Outline of Geophvsical-Chemical Problems. Proc. Xat. 

 Acad. Sci. U.S.A. vi. pp. 592-601. 1920. 



. See also Day, A. L. 



SOUFFLAND, G. See Galippe, V. 



SOUTH AFRICA, Uhtok of. Depaetment of Mines and Indestbies. 



Annual Reports of the Secretary for Mines and Industries and the Government 



Mining Engineer, for the Calendar Year ended 31st December, 1920. Pp. 1-123, 



1-23, i-iv. Fol. Pretoria, 1921. 

 2. Report of the South African Museum for the Year ended 31st December, 



1920. [L. Pebinguey, Director.] Pp. 1-13. Fol. Cape Town, 1921. 

 SOUTH AUSTRALIA. Annual Report of the Director of Mines and Government 



Geologist [L. K. Wabd] for 1919. Pp. 1-12. Fol. Adelaide, 1920. 

 2, Depaetment of Mines. Mining Review for the Half- Year ended June 30th, 



1920 (No. 32). Pp. 1-60, fisrs. 8vo. Adelaide, 1920. 

 SOUTHERN RHODESIA. Geological Subvet. Report of the Director 



[H. B. Maufe] for the Year 1920. Pp. 1-5. Fol. Salisbury, 1921. 

 SPA NGKN BERG, K. Erscheinungen an der Grenze von Diinnen Objekten im 



Mikroskop. Zeitschr. wissoisch. Mikrosk. xxxviii. pp. 1-28, figs., pi. i. 1921. 



A.C. 



2. Einbettungsmethode und Plagioklasbestimmung. Zeitschr. f. Krist. 



h i. pp. 430-432. 1921. 

 3. Die Verschiedenen Modifikationen des Calciumcarbonates. Ibid. pp. 432- 



434. 1921. 



SPARN, E. Bibliografia de la Geologia, Mineralogia y Paleontologia de la 



Republica Argentina hasta el Ano 1899. Acad. nac. Cienc. Cordoba, Misc. 



no. 3, pp. 1-93. 1921. 

 SPATH, L. F. On Cretaceous Cephalopoda from Zululand. Ann. S. Afr. Mus. 



xii. pp. 217-321, figs. pis. xix-xxvi. 1921. And A.C. 

 2. On Ammonites from Spitsbergen. Geol. Mag. 1921, pp. 297-305, 347- 



356. 1921. 

 . See also Tbechmann, C. T. 



SPEIGHT, R, Sarsen Stones and Drift Pumice in New Zealand. Tram. Roy. 

 Soc. S. Austr. xliv. p. 383. 1920. 



SPENCE. H. S. Phosphate in Canada. Canada, Mines Branch, no. 396, pp. 1- 

 156, figs. pis. i-xxxii, 13 maps [mineral occurrences]. 1920. 



— — - 2. Investigation of Miscellaneous Non-Metallic Minerals. [Talc and Soap- 

 stone. Barytes, Celestite, Strontianite.] Snmm. Bep. Mines Branch Canada, 

 1919, pp. 19-25. 1920. 



SPENCER, J. W. Preglacial Slope and Crest of the Niagara Escarpment. Bull. 

 Geol. Soc. Am. xxxii. pp. 54-56, figs. 1921. 



. Obit.— See Holm, T. 



SPENCER, L. J. Identity of Teechmann"s ' /3-tin ' with Stannous Sulphide. 

 Min. Mag. xix. pp. 113-123, fig. 1921. 



2. Biographical Notices of Mineralogists Recently Deceased : with an Index- 

 to tbose^previously published in this Magazine. Ibid. pp. 240-262, portraits. 

 1921. 



3. Curvature in Crystals, md. pp. 263-274, figs. pis. vii & viii. 1921. 



SPENGLER, E. Das Afienzer Triasgebiet. Jahrb. geol. Beichsanst. JT'ien, 



lxix. pp. 221-254, pi. iv [geol. map]. 1920. 

 . 2. Zur Tektonik des Obersteirischen Karbonzuges bei Thorl und Turnau. 



Jahrb. geol. Staatsanst. Wien, lxx. pp. 235-254, pi. viii [geol. map]. 1921. 



