[1921.] 



94 



SHANNON, E. V. Massive Laumonite from Montana. Am. Min. vi. pp. 6-7. 

 1921. 



2. New Minerals— Owyheeite. Ibid. pp. 82-83. 1921. 



3. The Identity of ' Gollbranite ' with Ludwigite. Ibid. pp. 86-88. 1921. 



4. The Old Cobalt-Mine in Chatham, Connecticut, Ibid. pp. 88-90. 1921. 



5. The Old Tungsten-Mine in Trumbull, Connecticut. Ibid. pp. 126-128. 



1921. 



— — 6. Additional Notes on the Crystallography and Composition of Boulangerite. 



Am. Journ. Sci. ser. 5, i. pp. 423-426. 1921. 

 7. Description of Ferroanthophyllite, an Orthorhombic Iron Amphibole from 



Idaho, with a Note on the Nomenclature of the Anthophvllite Group. Proc. 



U.S. Nat. Mus. lix. pp. 397-401. 1921. A.C. 

 8. Description of Vivianite Encrusting a Fossil Tusk from Gold-Placers of 



Clearwater County, Idaho. Ibid. pp. 415-417, fig., pi. xciii. 1921. A.C. 

 9. A Crystallographic Study of the Datolite from Westfield, Massachusetts. 



Ibid. pp. 479-539, figs., pis. ciii-cvi. 1921. A.C. 



10. Ludwigites from Idaho and Korea. Ibid. pp. 667-676. 1921. A.C. 



. See also Hewett. D. F. 



SHANNON, W. G. St. J. A Composite Sill at Newton Abbot (Devon). Abs. 



Proc. Geol. Soc. 1921-22, pp. 11-12. 1921. 

 SHAPLEY, H. Note on a Possible Factor in Changes of Geological Climate. 



Journ. Geol. xxix. pp. 502-504. 1921. 

 SHAW, E. W. Physical and Geographic Criteria in the Study of Sedimentary 



Deposits. Bull. Geol. Soc. Am. xxxi. pp. 411-418. 1920. 

 2, & P. L. Ports. Natural-Gas Resources available to Dallas and other Cities 



of Centra] North Texas. Bull. U.S. Geol. Surv. no. 716, pp. 55-89, tigs., 



pis, viii & ix [maps]. 1920. 

 SHEARER, H. K. See Cooke, C. W., 2. 



SHEPPARD, T. Bibliography of Yorkshire Geology, 1918-19. Proc. Tories. 

 Geol. Soc. xix. pp. 363-376. 1920. And A.C. 



2. The Origin of the Materials used in the Manufacture of Prehistoric Stone- 

 Weapons in East Yorkshire. Trans. IE. Riding Antiq. Soc. xxiii. pp. 34-54, 

 figs. 1920. A.C. 



3. The Evolution of Topographical and Geological Maps. Pep. Brit. Assoc. 



1920, Cardiff, pp. 391-404. 1920. And A.C. 

 4. Old Maps. Nature, cvi. pp. 180 & 243. 1920. 



5. Artefacts and their Geological Age. Ibid. cvii. p. 587. 1921. 



6. Spurn Point and the Lost Towns of the Humber. Inst. Water Eng. 



pp. 1-23, figs. 1921 ; A Water, xxiii. pp. 257-258. 1921. 

 7. Remains of Elephas in East Yorkshire. Naturalist, 1921, p. 76, fisy. 



1921. 



■ 8. Pseudodiadema variolare (Brongniart) in the Lower Chalk of North 



Lincolnshire. Ibid. p. 181. 1921. 

 9. Bibliography : Papers and Records relating to the Geology of the North 



of England (Yorkshire excepted), published during 1920. Ibid. pp. 217-253. 



1921. And A.C. 



■ 10. George Frederick Wright. [Obit.] Ibid. p. 306. 1921. 



. See also Lamplegh, G. W., 2. 



SHERLOCK, R. L. Rock-Salt and Brine. Mem. Geol. Surv. Gr. Br. Min. Pes. 



xviii. pp. i-vi, 1-123, figs. [geol. sketch-maps] , pis. i & ii. 1921. 

 . See also Howe, J. A. 



SHETELIG, H. Naar Nygdes Norge ? Naturen, xlv. pp. 193-211. 1921. 



2. Engelske Dvretegninger fra Stenalderen. Ibid. pp. 310-316, fisrs. 1921. 



SHIMIZU, S. See Yabe, H., 2. 

 SIEGERT, L. See Denckmann, A., 4- 



SIERRA LEONE. Geological Survey. Report for part of the Year 1918 and 

 for the Year 1919, by F. Dixey, Government Geologist. Pp. 1-19. Fol. Free- 

 town, 1920. 



SILVA L. de. El Estado de Sinaloa. Bol. Minero, Mexico, x. pp. 11-23. 1920. 

 SILVESTER, N. L. ' Lissons.' Geol. Mag. 1921, pp. 237-238. 1921. 

 SIMMERSBACH, B. Das Zentralrussiche Kohlenbecken. Zeitschr. f. Berg-, 



Hutten-, u. Salinemv. lxv. Abb. pp. 208-221, pi. ii [geol. map]. 1917. 

 ■ 2. Ueber den heutigen Stand unseres Wissens vom Innern der Erde. Jalirb. 



nassauis ch. Ver. NatMrTc. lxx. pp. 84-142. 1918. 



3. Das Bergbauwesen Perus. Ibid. lxxi. pp. 67-190, pi. iv. 1919. 



4. Zur neueren Geschichte des Preussischen Nickelerzbergbaues. Zeitschr. 



f. Berg-, Hutten-, u. Salinemv. Ixviii. Abb. pp. 48-57. 1920. 

 5. Zi'nn. Geol. Pundsch. xi. pp. 319-329. 1921. 



