Miscellaneous JVotices in Mineralogy, Geology, ^c. 236 



These facts connected with that mentioned by Dr. Hay- 

 den, (Vol. 1, p. 307) and by Prof. Dewey, seem to evince 

 that the fetid odour of minerals cannot always be traced to 

 organized matter. 



11. Fluor Spar on the Genesee River. 



[Communicated by Mf. John Boyd, a member of the Senior class in Yale 

 College, from Winchester, Conn.] 



Fluor spar in transparent cubical crystals imbedded in fe- 

 tid limestone, is found in the bottom of the great Western 

 canal, on the east shore of the Genesee river, at Brighton, 

 Ontario county, N. Y. 



Chalcedony is found among the loose masses of rock be- 

 low the Genesee falls, at Carthage, Ontario county. 



We have seen this fluor, it is very well characterized, the 

 crystals are from one half to three fourths of an inch in di- 

 ameter ; being deposited upon a black limestone, and being 

 themselves transparent and white, with a slight tinge of 

 blue, they form a pleasing contrast with the Hmestone, — JEd. 



12. Chalybeate Spring at Litchfield. 



Extract of a letter to the Editor from James Pierce, Esq, 

 dated Litchfield, August 22, 1820. 



I have recently discovered in this town a chalybeate 

 spring that promises to be of considerable utility. It issues 

 from an extensive bed of sulphuret of iron, situated on the 

 eastern side of Mount Prospect, four miles west of the vil- 

 lage of Litchfield. The spring is copious and perennial, 

 exhibiting in its course much oxid of iron, ochre, and a 

 white deposit. The extract from gall nuts, or an infusion 

 of white oak leaves produces a copious precipitate of the 

 gallate of iron, changing the colour of the water nearly black ; 

 neither Hme-water or sulphuric acid effected any change. A 

 dense white precipitate was produced by acetate of lead, in- 

 dicating probably a muriate or a sulphate. A peculiar 

 smell, by popular opinion attributed to sulphur, is percepti- 

 ble at the spring ; the hands retain this smell for hours after 

 washing in its waters. An astringent effect and soreness of 



