40 DONS. — DU 8 NOVEMBRR AU 17 JANVIER 1887. 
Diller. — The latest volcanic éruption in Northern California and its peculiar 
' Lava, 45. 
Becker. The Texture of Massive Rocks, 50. 
Kun/. — Fifth Mass of Meteorie iron from Auguste Co, 5g. 
Philadelphia. Proceedings ofthe Academy of natural sciences of— 
Part. II, April-September 1886. 
Ch. Wachsmnth, and F. Springer. — Révision of the Palaeocrinoidea (conti- 
nued), 153. 
Harvey. — On Anthracumartun trih/iilut, Scud. 231. 
Leidy. — Toxogon and other Remains from Nicaragua, 275. 
Foote. — The Opal Mines of Queretaro, Mexico, 278. 
Kœnig. — Composition of Stromeyerite, 28. 
Woolman. — Ariskany sandstone in Lycoming Co; Pa., 290. 
Washington. The United States Geological Survey. Bulletin of 
the — . 
N* 27. Work Doue in the Division of Chemistry and Physics mainly during 
the Fiscal year 1884-85. 
N° 28. The Gabhros and associated Hornhlende Rocks oocurring in the Neigh- 
liorhood of Baltimore, MD, 4 pi. 
N” 29. Ou the fresh-water invertcbrates of the North American Jurassic, 4 pi. 
N” 33. Notes on the Oeology of Northern California. 
Grande-Bretagne. Londres. — The Geological Magazine, 
n"» 270-271 (décembre 1880, janvier 1887). 
Decade III, vol. III, n" 12 et vol. IV, n” 1. 
N‘ 270. E. Wethered. — On the Structure and Organisms in carboniferous 
Limestone, 2 pl., 529. 
Aubrey-Strahan. — On the Rocks surrounding the Warwickshire Coal-field, 540. 
P. Rutley. — The igneous P,ocks, etc, of the Warwickshire Coal-lield, 557. 
Sharman. — On new Species of O/euM.? and Obolrlla frorn the lower Silurian, 
565. 
Hicks. — On the Ffynnon Beuno and Cac Gwyn Caves, 566. 
N” 271. H. Woodward. — On some spined Myriapods from the Carboniferous 
Sériés ofEngland, i pl., i. 
U.ssher. — The Coal Measures of Devonahire, lo. 
Gresley. — Notes on «Cône in Cône * Structure, 17. 
Carvill Lewis. — Diamantiferous Peridotite and the Genesa of the Diamond, 22 . 
Onkes-Brnwne. — A Bed of Red Chalk in the Lower Chalk of Sulïolk, 24. 
Carvill Levis. — Glaciation of north America, Great Britain and Ireland, 28. 
OIdham. — Facetted Pebbles from the Sait Range, Purijab, 32. 
Marr. — The Lower Palacozoic Rocks near Gettle, 35. 
— The Geological Society of — . 
Abstracts of lhe Proceedings of the — . 
N° 493-496 (novembre-décembre 1886). 
— The Quaterly Journal ofthe — , XXLll (Part 4), n” 168 (novem- 
bre 1886) — . 
Deeley. — On the Pleistoceno Succession in the Trent Basin, 437. 
