MINERALOGY. 2S1 



[Mineralogical Observations from E. Bohemia.] Min. Mitih, Heft i. 



pp. 25-38 ; woodcut. 

 Records the occurrence of a large number of minerals from various 

 localities where they had not been previously detected. The woodcut 

 illustrates the occurrence of amber, in a lenticular mass, in Cretaceous 

 sandstone (Cenomanian) near Peklo. Amber is also found in E. 

 Bohemia, in Neogene strata. F. W. R. 



Hintze, Dr. C. Regelmiissige Verwachsung von Eisenkies mit Eisen- 

 glanz. [Regular Growth of Iron-pyrites and Iron-glance.] Min. 

 Mitth. Heft ii. p. 141. 

 A crystal of pyrites from Elba shows some of the faces of the cube, 

 covered with a thiji layer of iron-glance, with triangular markings cor- 

 responding with rhombohedron. F. W. R. 



Hirschwald, Prof. Dr. J. [Double Refraction of Leucite.] N. Jahrb. 

 Heft vii. pp. 733-735. 



Tschermak finds that the leucite of Aquacetosa is doubly refracting ; 

 Vom Rath thereupon maintains that this supports his view of the 

 quadratic crystallization of this species ; and Hirschwald now denies 

 the validity of this inference by pointing to the anomalous optical pro- 

 perties of many isometric species, whence he concludes that the cubic 

 crystallization of leucite is not disproved. F. W. R. 



[Leucite.] K Jahrb. Heft v. pp. 519-525. 



Controversial. A reply to Vom Rath's objections to the author's 

 " Zur Kritik des Leucitsystems." 



How, H. Contributions to the Mineralogy of Nova Scotia. Phil. 

 Mag. ser. 5, vol. i. pp. 128-138. 



Doubts having been expressed (Chem. News, vol. xxx. p. 165) as to 

 three minerals from Triassic trap in the Bay of Fundy, described by 

 the author {Edin. New Phil. Journ. vol. x. p. 84), and named respec- 

 avely cyanolite, cerinite, and centralassite ; the author states his 

 adherence to the former opinion as regards the first two, and adds 

 several particulars concerning the third, to show that while it, okenite, 

 and gyrolite are closely related, " the merging of one in either of the 

 othei-s as a species is not admissible." T. G. B. 



Hudleston, W. H. Visit to the Mineralogical Department of the 



British Museum. Proc. Oeol. Assoc, vol. iv. no. 8, pp. 480-482. 

 Reports a. demonstration on the feldspars and micas by Prof. N. S. 

 Maskelyne. 



Hunt, Dr. T. S. The Cornwall Iron Mine and some Related Deposits 



in rennsylvania. Trans. Amer. Inst. Min. Eng. vol. iv. pp. 319- 



325. 



Contains observations on the crystalline iron-ores of Pennsylvania. 



These are chiefly magnetites, occurring along both borders of the Meso- 



