Count DE BouRNON o« ^j;'^/^//o«<r, S65 



I have seen specimens of bardiglione, in small bluish laminae, 

 including pretty considerable masses of sulphur ; but I was unable 

 to learn whence they were obtained. 



Granular Bardiglione, 



This variety has considerable resemblance In its texture and exter- 

 nal aspect to the granular magnesian carbonate of lime ; but in its 

 lustre it approaches nearest to the lamellar variety of that substance. 



Stalactiform Bardiglione* 



This variety presents Itself In a mamillary, and frequently con- 

 torted form, resembling the convolutions of the Intestines, whence it 

 was called Pierre de Tripe, by which name alone It was known for 

 some time. Its texture Is compact, approaching more or less to 

 lamellar. 



This variety of bardiglione appears hitherto to have come exclu- 

 sively from the salt-mines of WIeliczka, though it Is also said to have 

 been met with In those near Bochnia, In Poland. It was at first very 

 improperly considered as a sulphate of barytes, which very probably 

 may have been the cause of a variety of the latter substance, which 

 sometimes approaches to a stalactical figure, having been confounded 

 with it ; hence it has been said by some mineralogists to have been 

 found also in Saxony, and in Derbyshire, from which places I have 

 never seen any thing that could be referred to It. 



According to Klaproth this substance Is mixed with a small pro- 

 portion of sea-salt ; his analysis gives 42 parts of lime, 56.5 of 

 sulphuric acid, and 0.25 of sea-salt, leaving a loss of 1.25, 



