Dr. Walter Flight— On Meteorites. 505 



Predazzo), monzonite, tourmaline-granite, and porphyrite. These 

 are found, as well as the 'quartz-porphyries' of the Dyas period 

 (cf. siqjra) very commonly associated with interbedded tuffs and 

 with contact breccias. As a natural consequence, the calcareous and 

 dolomitic strata are often altered into a coarsely crystalline marble, 

 while crystals of garnet, vesuvian, and spinel are developed in 

 places by contact-metamorphosis.' 



Upon the whole, it would appear from the most recent observa- 

 tions that even in the Alps the distinction between the Post-Carbon- 

 iferous (Dyassic) and Triassic systems is not very clearly defined, 

 so far as any actual boundary-line is concerned : special importance 

 from this point of view seems to attach to the views of Prof. Giimbel, 

 to which reference has been made above, as to the transition character 

 of the Bellerophon Limestone of the Puster Thai and the Sandstone 

 series (with plant-remains) near Bozen. Anything like confident 

 assertion on this matter would however be at present premature : 

 we must await the results of further observations, results for which 

 doubtless a few years will suffice to the many competent observers, 

 who wend their way every summer from the universities and 

 academies of Germany and Austria to the regions of the High Alps. 



V. — Supplement to a Chapter in the History of Meteorites. 

 By Walter Flight, D.Sc, F.G.S. 



[Continued from p. 452.) 



1853. — Tazewell, Claiborne Co., Tennessee.^ 



Brezina points out that in the Catalogue prepared by Tschermak^ 

 this iron is indicated as Of, showing fine-ruled Wiedmanstiittian 

 figures. It differs, however, very much from other irons of this group, 

 like that from Lion River, Jewell Hill, Charlotte Co., etc., while 

 it closely resembles the Butler iron. While, however, in the latter 

 case the chief walls of the skeleton inclose very large chambers, 

 here they are very small, so that the skeleton-character is far less 

 marked. The characteristic of the two irons of Butler and Taze- 

 well rests mainly on the very unusual smallness of the octahedral 

 lamellae, whereby the beam-iron, or its representative, almost 

 vanishes, the irons consisting almost entirely of interstitial and 

 band-iron (and of troilite inclosed in both, and schi'eibersite plates 

 in Tazewell). Whether the almost infinitely thin nucleus of the 

 lamellee is identical with the ordinary beam-ii'on can only be decided 

 by further investigation. The appearance of traces of granular 

 structure renders it very probable. 



Found 1858-59. — Staunton, Ang^usta Co., Virginia.* 



In 1871 Mallet described three masses of meteoric iron which had 

 been found near Staunton ; another has now been brought to light, 



1 Credner: El. der Geol. p. 631. 



2 A. Brezina, Sitzber. Aknd. Wiss. 1880, Ixxxii. Oct.-Heft. 



3 Mineraliig. Mitth. for 1872, 165. 



* J. W. Mallet. Amer. Journ. Science, 1878, xv. 337. 



