Sulphate of Barytes—in the same place, constituting the immediate walls of the vein. Its breadth on the wall varies from an inch to a foot, and the breadth of the vein is 6 or 8 feet.
Galena—in Whately. This is probably from a continuation of the vein of this ore that appears at Montgomery, Southampton, and Hatfield. A single crystal has been found in the same range, in Greenfield, twelve miles north of Whately; but it was not in place.
Red Oxyde of Titanium—in Leyden, crystallized on quartz and tremolite, chiefly on the latter; colour brownish red—specific gravity 4.232; scratches glass, handsomely geniculated, and sometimes several geniculations in the same specimen; in one as many as six could be perceived.
Eagle Stone, or Nodular argillaceous Oxide of Iron—one specimen on the banks of Deerfield river.
Rose-red Quartz—a loose mass in alluvial soil, Deerfield.
Red Oxide of Titanium—in Shelburne.
I would acknowledge my peculiar obligations to Professor Silliman, of New-Haven, and to Dr. David Hunt, of Northampton, Mass. for the very generous assistance they have given me in a commencement of the study of mineralogy, and for their liberal aid in this particular communication. Their kindness, it is believed, will not soon be forgotten. To several others, also, I am indebted for communicating facts of importance.
Deerfield, October, 1817.