540 Mr. R. P. Greg on some Meteorites 



a 



6. Plescowitz, Bohemia, 22 June 1723. — This specimen, 

 also a unique one if correctly labelled, is deposited among the 

 meteorites in the British Museum. There is strong reason for 

 supposing this is really a portion of the Tabor, 3rd July 1753, 

 meteorite ; the physical characteristics are nearly the same, both 

 belonging to the bluish meteorites of Reichenbach (see Note). 

 The Plescowitz is a very ancient and rather obscure fall ; no spe- 

 cimens are known to be preserved in Europe, while Tabor is one 

 far better known, and of which specimens are not uncommon. 



7. Marmande, Lot-et- Garonne, France. — This is represented 

 by a small and unique specimen in the British Museum ; it was 

 purchased by myself last year from the late M. Boubee, a 

 geologist and mineral-dealer of Paris ; the specimen is without 

 any crust, and is accompanied by a label stating it to have been 

 part of a stone which fell near Marmande, July 4th, 1848 ; M. 

 Boubee knew nothing more about it, than that he had found it, 

 as well as the label, among specimens purchased as part of the 

 effects of a deceased Colonel in the French army. The stone 

 resembles in general colour and appearance stones of the Chateau- 

 Renard class, but on a closer examination shows a more crystal- 

 line texture, and may be said to come between that stone and 

 the peculiar meteorite of Juvenas. 



There appears to be no published account of this fall, nor are 

 there any other specimens known in any^of the English or Con- 

 tinental collections. On the whole, there does not seem to be 

 any strong reason for not considering this otherwise than as an 

 authentic specimen. 



Irons. 



8. Livingston County, Kentucky. — This iron was originally 

 described in 1846, by the late Dr. Troost, in whose collection is 

 probably to be found the principal mass. Specimens of this iron 

 are very rare. In a qualitative analysis lately made for me by 

 Professor Roscoe, of Owens College, Manchester, an unusually 

 large proportion of nickel was detected. This iron, when etched 

 with acids on a polished surface, shows no Widdmanstattian 

 figures whatever, or even semblance of crystalline structure, 

 merely some small bright spots closely scattered at pretty regular 

 intervals ; in both these respects it resembles the iron of Green 

 County, Tennessee, and to some extent that of Rasgata. 



9. Dickson County, Tennessee; fell 31st August, 1835 ; de- 

 scribed by Dr. Troost in 1845, in Silliman's Journal. — The prin- 

 cipal mass is in Dr. Troost' s collection, and weighs about 9 lbs.; it 

 is pear-shaped, and outside crust quite bright, without any oxida- 

 tion. Specimens of this iron are very rare; there is a small 

 specimen in the British Museum, but unetched ; a small speci- 



