374. Domestic Intelligence. 
green and blue carbonat of copper, in beautiful contrast 
with the white of the barytes. 
he sulphate of barytes forms a vein of five or six inches 
thick, in greenstone trap, which — on an ri aus 7 
sandstone, two miles from Hartford. 
Carbonat of Barytes. 
Professor Rafinesque, in ina letter to Dr. Torrey, of New- 
fork, announces the overy of large quantities of the 
carbonat of barytes, near be hensbinons in Kentucky. We 
shall wait with much interest for a confirmation of this very 
angoresting observation.—[ Ed. ] 
Comet of 1819. 
We have just received a part of the [Vth Vol. of the 
iwansactions of the American Academy of Arts and Scien- 
ces, now printing, which contains a memoir on the orbit of 
this comet, by Professor A. M. Fisher, of Yale College. 
The elements of the orbit, as corrected by the method of 
Laplace} are stated as follows : 
Perihelion’ distance, 3366878 
Time of passi ng the perihelion; Sune 27th, ri 56m. 285. 
Mean time at —— aoe 
Inclination of the - 80°. 56! 17” 
Longitude of the etic en St 273° SP 184. 
Place of the perihelion, - ~ —- 286°.21'.33" 
Motion direct. 
Oxid of Manganese, and “Chremat of Iron. 
Mr. E. Hitchcock has shewn us specimens of oxid of man- 
ganese from Deerfiel ld and Leverett, and he informs us that 
chromat of iron has been found in Cummington, Mass. 
twenty miles N. W. of Northampton. There is said to be 
@ mine of manganese in Greenup county, Kentucky. 
