Neue Literatur. 



[21] 



och iselfvar II. 357. — Grönwall: Nägra anmärkningar om lagerserien 

 i Steons Klint. 365. — Lindström: Die Korallenfauna der Etage 5 des 

 norwegischen Silursystems von J. Kiär. 374. — Hennig: Svar tili Dr. 

 Grönwall med anledning at hans anmärkningar mot mina „Studier Öfver 

 den baltiska Yngre kritans bildningshistoria". 379. 



Rivista italiana di Mineralogia e crist allo grafia. Padova. 

 [Jb. 1898. II. -363-.] 



1898. 20. Fase. 1—4. — Ferro : Nuovo metodo per la determinazione 

 dell' angolo vero degli assi ottici. 3. — Fantappie : Sopra alcuni blocchi 

 erratici a granato ed idioerasio nella regione Cimina. 14. — Zambonini : 

 Sul sanidino del Monte Cimino (Viterbese). 20. 



21. Fase. 1 — 'S. — Panebianco : Concetti errati in cristallografia. 3. 



— Zambonini: Magnetite dei fossi di Acquacetosa. 21. — Spezia: Con- 

 tribuzioni di geologia chimica. Esperienze sul quarzo e sulP opale. 36. 



— Millosevich : Zolfo ed altri minerali della miniera di Malfidano presso 

 Buggerru. 43. 



Travaux de la Societe Imperiale des Naturalist es de 

 St. Petersbourg. 



1899. 27. Liefg. 5. — Popoff: Ellipsoidische Einsprenglinge des 

 finländischen Rapakivigranites. 1. — Tolmatschow : Über Variolit vom 

 Fluss Jenissei. 51. — Polenow: Die massigen Gesteine vom nördlichen 

 Theile des Witim-Plateaus. 89. 



The American Journal of Science. Editor Edward S. Dana. 8°. 

 New Häven, Conn., U. St. [Jb. 1899. I. [58].] 

 (4.) 7. No. 40. (April 1899.) — Fairchild: Glacial lakes Newbury, 

 Warren and Dana in Central New York. 249. — Means: Rapid method 

 for the determination of the amount of soluble matter in a soil. 264. — 

 Pirsson: Phenocrysts of intrusive igneous rocks. 271. — Pratt: Occurrence, 

 origin and chemical composition of chromite. 281. — Turner : Eock-forming 

 biotites and amphiboles. 294. — Hay : One little known and one hitherto 

 unknown species of Saurocephalus. 299. — Wieland : Some american fossil 

 cycads II. 305. 



No. 41. (May 1899.) — Williams: Occurrence of Paleotrochis in 

 volcanic rocks in Mexico. 335. — Diller : Origin of Paleotrochis. 337. — 

 Derby: Association of argillaceous rocks with quartz veins in the region 

 of Diamantina, Brazil. 343. — Hobbs: Goldschmidtite, a new mineral. 

 357. — Darton: Hydromica from New Jersey. 365. — Palache: Powellite 

 crystals from Michigan. 367. — Wieland : Study of some American fossil 

 cycads III. 383. 



The Journal of Geolog y. A Semi-Quarterly Magazine of Geology 

 and related Sciences. Chicago. 8°. [Jb. 1898. II. -364-.) 

 1898. 6. No. 4. — A Symposium of the Classification and nomen- 



clature of geologic time-divisions. 333. — Keyes : Probable stratigrafical 



B* 



