16 PETRIFACTIONS AND THEIR TEACHINGS. CHAP. I. 



A portion of the celebrated mass of iron of the descent of which, at 

 Agram, in Croatia, on the 26th of May, 1751, detailed official accounts 

 were drawn up by the authorities of that place, who presented it to the 

 Roman Emperor, Francis I., and to the Empress Maria Theresa. 



Fragment of the iron from the Upper Senegal, in Africa, discovered 

 between the years 1760 and 1770. 



A large piece detached from the celebrated mass of Siberian native 

 iron, which was discovered in 1772, by Pallas, on the summit of a moun- 

 tain between Abakansk and Belskoi Ostrog, on the banks of the Jenisey, 

 where it was considered by the Tartars as a sacred relic: the mass, 

 which originally weighed about 1,680 pounds, is in the Museum of the 

 Imperial Academy of Sciences of St. Petersburg. 



Specimens of the native iron from Otumpa, in the Gran Chaco 

 Gualamba, in South America, found, in 1783, by Don Rubin de Celis, 

 who estimated the weight of the mass to be about 300 quintals, or 15 

 tons. 



A large specimen of the Brazilian iron, found at the Bemdego rivulet, 

 Capitania of Bahia, in 1784, described in 1816. 



Some of the Mexican meteoric iron supposed to be from that of Xiqui- 

 pilco, first brought into notice in 1784. 



A large piece (presented by John Parkinson, Esq.) of the iron of Zaca- 

 tecas, Mexico, known time out of mind, but first described in 1792 ; and 

 a small one of that found in the province of Durango, described by Baron 

 Alexander von Humboldt (this has by some been confounded with that 

 of the preceding locality). 



Two pieces of the Cape meteoric iron, found in 1793, and first made 

 known in Barrow's Travels in Southern Africa: the mass is now in the 

 cabinet of Haarlem. 



A portion of the mass, originally weighing upwards of 3,300 pounds, 

 found at Bitburg, in the Eifel, N. of Treves, in 1805, but which, from 

 ignorance, was committed to the smelting furnace. 



A portion of the mass from Texas (Red River), found 1808, described 

 1845. 



Three specimens of iron from Rasgata, N.E. of Santa F6 de Bogota, 

 South America; found in 1810, and described about twenty-four years 

 afterwards. 



A piece from the large mass (originally weighing 191 pounds, of 

 which upwards of two-thirds came to the Imperial Collection at Vienna) 

 of the iron of Elbogen, near Carlsbad in Bohemia, where from time 

 immemorial it had been known by the popular and legendary appel- 

 lation of the Enchanted Burgrave (der verwiinschte Burggraf) ; its 

 meteoric origin ascertained in 1811. 



Small portions of the meteoric iron from Texas, known to the scien- 

 tific world since 1814. 



Two specimens of the mass of iron found at Lenarto in Hungary, in 

 1814, one of which, being polished and treated with acid, exhibits the 

 outlines of imperfect crystals. 1 



\ The delineations thus produced are known by the appellation of 

 Widmannsted figures. 



