374 Domestic Intelligence. 
green and blue carbonat of copper, in beautiful contrast 
with the white of the barytes. 
The sulphate of barytes forms a vein of five or six inches 
thick, in greenstone trap, which reposes on an argillaceous 
sandstone, two miles from Hartford. 
Carbonat of Barytes. 
Professor Rafinesque, in a letter to Dr. Torrey, of New- 
York, announces the discovery of large quantities of the 
carbonat of barytes, near Lexington, in Kentucky. We 
shall wait with much interest for a confirmation of this very 
interesting observation.—[ Ed. | 
Comet of 1819. 
We have just received a part of the [Vth Vol. of the 
transactions 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, - - - - 0.3366878 
Time of passing the perihelion, June 27th, 11h. 56m. 28s. 
Mean time at Greenwich. 
Inclination of the orbit, - - = 80°.56/.17'” 
Longitude of the ascending node, -  273°.39/.18'.4 
Place of the perihelion, - - 286°.21'.33” 
Motion direct. 
Oxid of Manganese, and Chromat of Iron. 
Mr. E. Hitchcock has shewn us specimens of oxid of man- 
ganese from Deerfield and Leverett, and he informs us that 
ehromat of iron has been found in Cummington, Mass. 
twenty miles N. W. of Northampton. There is said to be 
a mine of manganese in Greenup county, Kentucky. 
