228 PETROLOGY. 



and partly lamellar growths of various minerals, or they consist of 

 radiated fibrous masses. Granules of meteoric iron appear to have 

 been formed subsequently by reduction. No vitreous or lava-like 

 substances are present (except the crust) ; and the meteorite appears to 

 be a clastic rock, and not to have been fused. F. W. R. 



Smith, J. Lawrence. Description of the Nash County Meteorite 

 which fell May 14, 1874. Amer. Journ. vol. x. pp. 147, 148. 



Pell in fragments — exterior fused ; contains 15-21 p. c. of nickeli- 

 ferous iron and 84-79 of stony minerals. These were bronzite and 

 olivine, the latter slightly predominating. T. G. B. 



Tschermak, Gr. Die Triimmerstrucktur der Meteoriten von Orvinio 

 und Chantonnay. [Structure of Meteorites of Orvinio and 

 Chantonnay.] Sitz. k. Ale. Wiss. Wien, math.-nat. CI. Abth. i. 

 Bd. Ixx. pp. 459-472 ; 2 plates. 



See Geological Recoed for 1874, p. 220. This paper should not 

 have been entered in that volume, as it was not published in 1874. 



-. Das Krystallgefiige des Eisens, insbesondere des Meteoreisens. 



[Crystallographic Structure of Meteoric Iron.] Sitz. k. AJc. Wiss. 



Wien^ math.-nat. CI. Abth. i. Bd. Ixx. pp. 443-458 ; plate and 3 



woodcuts. 



Cast iron shows octahedral and sometimes tesseral planes ; some 



meteoric irons, e. g. Brunau (1847), show tesseral cleavage ; the figures 



on etching with acid are due to lamellae — planes of the triakisocta- 



hedron. E. B. T. 



La formaziono delle meteorite e il vulcanismo. [Eorma- 



tion of Meteorites and Vulcanicity.] Boll. R. Com. Geol. Ital. 



vol. vi. pp. 381-392, stated to be a transl. from ^itz. k. Ak. Wiss. 



Wien, math.-nat. CI. Bd. Ixxi., where the paper is not to be found. 



Gives a resume of the conclusions res])ecting meteorites, which are 



considered to be formed by the collision of fragments ejected from 



bodies in the solar system. T. G. B. 



Wright, A. W. Examination of the Gases from the Meteorite of 

 Eeb. 12, 1875. Amer. Journ. vol. x. pp. 44-49. 



The meteorite was a ' stony ' one in Iowa Co. The gases were CO , 

 CO, H, and N — the first and third being in much larger quantities 

 than the rest. T. G. B. 



See also : — 



Roscoe, Prof. H. E., Sir E. Sabine, and Dr. W. Flight. See Manual 

 of the .... Geology .... of Greenland : pp. Ill, 112. 



