*£5$ t>N STONY AND METALLINE STJBSTA#CI$ 



harder than the reft of the ftone: the white gritty part readily 

 crumbled, on being rubbed with a hard body ; and, on being 

 broken> a quantity of it attached itfelf to the magnet, but 

 more particularly the outfide coat or cruft, which appeared 

 almoft wholly attractable by it. 

 The author de* As two of the more perfect ftones which I had obtained, as 

 jefture^ COn " ^ c ^ as P arts °^ ^ orne otn ers, have been examined by feveral 

 gentlemen well verfed in mineralogy and chemiftry, 1 (hall 

 not attempt any further defcription of their conftituent parts ; 

 nor (hall I offer any conjecture refpecling the formation of fuch 

 lingular productions, or even record thofe which I have heard 

 of others, but leave the world to draw their own inferences 

 from the facts above related. I fhall only obferve, that it is 

 well known there are no volcanos on the continent of India; 

 and, as far as I can learn, no ftones have been met with in 

 the earth, in that part of the world, which bear the fmalleft 

 refemblance to thofe above defcribed. 



Iron in the Bar- IT remains for me to fpeak of a fubftance mentioned in the 

 {^tTh^hStn Litho P h y luchm B°™***W> Parti, page 125, defcribed thus i. 

 m Bohemia. M Ferrum retra&orium, granulis nitentibus, matrice virefcenti 

 " immixtis, (Ferrum virens, Linn.) cujus fragmenta, ab unius 

 " ad vigenti ufque librarum pondus, cortice nigro fcoriaceo 

 ** circumdata, ad Plann, prope Tabor, circuli Bechinenfis Bo- 

 " hemiae, paflim reperiuntur." 



The iron thus defcribed, is moreover made remarkable by & 

 note *, which obferves, that credulous people aflert it to have 

 fallen from heaven during a thunder ftorm, on the 3d of July> 

 1753. 



The collection of Baron Born, it is well known, has a place 

 in the cabinet of the Right Honourable Charles Greville, who, 

 from the effect produced by comparing the hiftories and ftruc- 

 ture of the Italian and Yorkfhire ftones with the defcription of 

 this iron, was induced to fearch the collection of Born, where 

 he difcovered the very fubftance aflerted to have fallen on the 

 3d of July, 1753. How far thefe four fubftances have refem- 

 blance to each other, it will foon appear not to be my province 

 to anticipate. 



* Quae (fragmenta) 3 Julii, anni 1753, inter tonitrua, e ccel* 

 jpluiffe credulioies quidam aflerunu 



The 



