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J. L.~Thompson.—On the Cause of the Glacier Motion, 412. 
Canadian Naturalist and Quarterly Journal of Science. New Series. 
Vol. iv. No. 4. December 1869. 
T. S. Hunt.—Volcanos and Earthquakes, 387. 
KE. Billings.—Notes on the Structure of the Crinoidea, Cystidea, and 
Blastoidea, 426, 
F. B. Meek and A. H. Worthen.—Notes on some points in the Struc- 
ture and Habits of the Paleozoic Crinoidea, 434. 
Igelstrom, Nordenskiold, and Ekmann.—On the Existence of Rocks 
containing Organic substances in the Fundamental Gneiss of 
Sweden, 452. 
T. Macfarlane.—On the Geology and Silver-ore of Wood’s Location, 
Thunder Cape, Lake Superior. Part 2, 59. 
Geology and Mineralogy, 467. 
Chemical News. Vol. xxi. Nos. 539-551. 
Chemical Society. Journal. Second Series. Vol. viii. April and 
May 1870. 
Colliery Guardian. Vol. xix. Nos. 482-494. 
Copenhagen. Oversigt over det Kongelige danske Videnskabernes 
Selskabs Forhandlinger. 1868, No. 5; and 1869, No. 2. 
Dresden. Sitzungs-Berichte der naturwissenschaftlichen Gesellschaft 
Isis zu Dresden. Jahrg. 1869. Nos. 10-12. October to De- 
cember. 
H. Credner.—Ueber das Massenvorkommen von gediegenem Kupfer 
in Nordamerika, 182. 
W. Hilgard.—Ueber das Neueste in der Geologie der Suidweststaaten 
Nordamerikas, 183. 
Otto.—Die Neueren Untersuchungen auf Steinsalz in Preussen, 188. 
Giinther.—Einiges iiber in der Menschenzeit ausgestorbene Thiere, 
227. 
G. Jenzsch.—Einige Worte in Betreff seiner Eruptivgesteins-Orga- 
nismen, 248, 
East India Association. Journal. Vol. iv. No.1. 1870. 
Einsiedeln. Protokoll der geologisch-mineralogischen Sektion der 
Versammlung der Schweizerischen Naturforschenden Gesellschaft 
in Hinsiedeln, den 25. August 1868. 
Electric Telegraph and Railway Review. Vol. i. Nos. 11-16. 
Florence. Bollettino del Reale Comitato Geologico d'Italia. Nos. 
2-5. February to May 1870. 
I. Cocchi.—Cenno sui terreni stratificati dell’ Isola d’Elba, 39, 70. 
G. Nesri ed KE. Spreafico.—Sageio sulla Geologia dei dintorni del 
Lago di Lugano, 56. : AN : 
E. Bechi.—Analisi chimica della Selagite di Montecatini di Val di 
Cecina, 64, 
