f 



GEOLOGICAL BOOKS AND PAPERS-contimted. 



MONTESSUS DE BALLORE (F.). Frequence des Tremblements de Terre. 1897. 



8vo. gd. 



MORRIS (J.). Gems and Precious Stones of Great Britain. 1868. 8vo. Coloured 



plate. IS. 



MUGGE (O.). Krystallbau der pyrogenen Quarze. 1892. 8vo. is. 



Mineralogische Notizen. 1889. 8vo. i.f. 



Ueber einige Gesteine des Massai-Landes. Rammelsberg (C.) : Ueber die 



Gruppe des Skapoliths. 1886. 8vo. 2s. 



Ueber die Plasticitat der Eiskrystalle. 1895. 8vo. Plate. is. 3^/. 



Ueber regelmassige Verwachsungen von Barytocalcit und Witherit. Zur 



Kenntniss der optischen Eigenschaften des Syngenit. 1895. 8vo. Plate, is. 3^. 

 U ntersuchungen iiber die " Lenneporphyre " in Westfalen. Ramsay (W.) : 



Uber Eudialyt von der Halbinsel Kola. 1892. 8vo. Nine plates. ^s. 



Zwillingsbildung am Chlorbaryum. 1890. 8vo. 6d. 



MULLER (G.). Analyse der Idaquelle zu Biloves in Bohmen. 8vo. 6d. 



MUNZING (L. ). Aufbau des Periklins aus dem Pfitschthale und seine Stellung im 

 Systeme der Feldspathe. 1891. 8vo. Plate. is. 



NEUMAYR (M. ). Kritische Bemerkung iiber die Verbreitung des Jura. 1890. 

 8vo. IS. ^d. 



Ueber die Beziehung zwischen der russischen und der westeuropaischen Jura- 

 formation. 1887. 8vo. IS. 6d. 



NIKITIN (S.). Uber die Jura-Ablagerungen des Himalaya und Mittelasiens. 

 1889. 8vo. IS. 2,d. 



DULAU & CO., 37, SOHO SaUARE, LONDON, W. 



THE AMERICAN GEOLOGIST 



For 1899. 



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