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Jahrg. Bd. Seite 



Hutchings,W. Maynard: On the Origin of some Slates. R. 1891 I .92 



— Rutile in Fireclays. Reply to Major-General Mac Mahon. R. 92 I 272 



— On the probable Origin of some Slates. R 92 I 77 



— Further Notes on Fireclays etc. R 92 I 272 



— On the altered Coniston Flags at Shap. R 92 II . 263 



— Petrographical Notes on some Lakex-District Rocks. R. 92 II 265 



— Notes on the Ash-slates and other Rocks of the Lake- 



District. R 93 I 288 



Hutton, F. W.: On a Hornblende-Biotite Rock from Dusky 



Sound, New Zealand. R 90 II 90 



Huyssen: Die Tiefbohrung im Dienste der Wissenschaft, 



insbesondere zur Ermittelung der Wärme im Innern 



des Erdkörpers. R 90 II 234 



— Beobachtungen über Temperaturen in tiefen Bohrlöchern. R. 90 II 234 

 Hyatt, Alpheus: Carboniferous Cephalopods. R. .... 93 I 180 



— Jura and Trias at Taylorville, California. R 94 II 110 



Hyland, J. Shearson: On some Epidiorites of NW.-Irland. R. 91 I 92 



— On some Spherulitic Rocks from Co. Down. R. ... 91 I 399 



— On some Epi-Diorites of North-West Ireland. R. . . 91 I 399 



— On some Specimens from Wady Haifa, Upper Egypt. R. 91 I 400 



— On the Mesolite (Galactite) of Kenbane Head, Co. An- 



trim. R 91 I 400 



— Ueber die Gesteine des Kilimandscharo und dessen Um- 



gebung. R 91 II 87 



I. 



I d d i n g s , J. P. : On the Crystallization of Igneous Rocks. R. 90 I 53 



— Obsidian Cliff, Yellowstone National Park. R. ... 90 II 270 



— The Mineral Composition and Geological Occurrence of 



certain Ingneous Rocks of the Yellowstone National 



Park. R 91 I 104 



— On the Origin of Primary Quartz in Basalt. R. ... 91 I 274 



— On a Group of Volcanic Rocks from the Tewan Moun- 



tains, New Mexico, and on the Occurrence of primary 



quartz in certain basalts. R 92 I 80 



— Spherulitic Crystallization. R 93 I 297 



Iddings, J. P. and S. L. Penfield: Fayalite in the Ob- 

 sidian of Lipari. R 1892 I 321 94 I 41 



— — The Minerals in hollow Spherulites of Rhyolite from 



Glade Creek, Wyoming. R 1894 I 55 94 I 79 



Igelström, L. J.: Mineralogische Mittheilungen aus 



Schweden. A 90 I 248 



— Mineralogische Mittheilungen. R. . . . 1890 I 231 90 II 221 



8. Gediegen Blei aus dem Sjögrubenfeld. R. . . 90 II 53 



9. Zwei neue Minerale aus dem Sjögrubenfeld, Kirch- 

 spiel Grythyttan, Bezirk Oerebro. R 90 II 54 



15. Molybdänsäure im Scheelit von Yxsjö. R. . . 93 II 33 



— Mittheilung über Hausmanniterze in Schweden. R. . . 90 I 232 



— Erwiderung. R 90 I 410 



— Chloroarseniat von Jakobsberg und der Sjögrube. R. . 90 I 411 



— Plomb natif de la mine de manganese de Sjögrufvan, 



paroisse de Grythyttan, gouvernement d'Oerebro. R. 90 II 53 



— Plumboferrit, ein neues Mineral von der Manganerzgrube 



Jakobsberg bei Nordmarken in Wermland. R. . . . 93 I 236 



