Domestic. 405 



16. Jfezo edition of a Grammar of JVatural and Experimen- 

 tal Philosophy ; by Rev. David Blair. 



An improved and enlarged edition of this work, under 

 the direction of Dr. Comstock, has been published at Hart- 

 ford. 



17. Formation of Calcareous Spar. 



It is not often that we can detect those causes actually at 

 work by which natural mineral crystals are produced. It 

 may therefore be interesting to mention the following cir- 

 circumstance : — Mr. Stephen Huggins, of New-Haven, on 

 pouring out the contents of a bottle of Saratoga mineral wa- 

 ter, which had stood several years in his cellar, found some 

 well defined crystals and fragments of calcareous spar at the 

 bottom of the bottle. They are now in my possession, and 

 have the full lustre and the proper cleavage of Iceland spar, 

 only their colour is a little yellow — owing, without doubt, to 

 the carbonat of iron, which along with the carbonat of lime, 

 forms a part of the contents of this powerful water, and is 

 suspended in it by a high charge of carbonic acid to which 

 the water owes its great briskness. — Ed, 



18. CatsJcill Lyceum. — James Pierce, Esq. President 

 of the Lyceum has recently read to that body two very in- 

 teresting and instructive papers — the one on the varioivs 

 breeds and the economy of sheep, and the other on the na- 

 ture and benefits of irrigation. Both papers are replete with 

 interest, and do honour to the Lyceum of Catskill, which is 

 not behind its sister Institutions in efforts to promote useful 

 knowledge. 



19. Fluor Spar and Oxide of Titanium, — Extract of 

 a letter from the Rev. Edward Hitchcock, dated Conway, 

 May 18th, 1822. 



"I recently discovered the green fluate of lime in this 

 town, in a vein of Mica slate, though in small quantities. 

 It phosphoresced. If I mistake not, I have found also on 

 crystallized quartz, not only the common eight sided ge- 

 niculated prisms of the red oxide of Titanium, but also that 

 mineral, under its primitive form, viz. a rectangular prisra 



