15. Galena. Only a specimen in the limestone on West Brook.
16. Iron Ore. Bog ore on the Hoosack, a mile northeast of the college. Yellow earth, from which yellow ochre is obtained in great quantity, in a hill (R) on the bank of Green River, 2 miles south of the college.
At the north end of Saddle Mountain, but low down, yellow earth is connected with reddle, or a substance much resembling it. It is less hard than the common reddle, but is composed of the same ingredients.
Magnetic Oxyd of Iron, regular octahedrons, in mica slate at the base of Stone Hill.
Supersulphuret of Iron, massive and crystallized, in argillaceous slate, mica slate, compact limestone, and quartz.
17. Prase. Beautiful, and containing sulphuret of iron; lately found by Mr. Eaton, a little east of the summit of Hoosack Mountain, in Florida.
18. Puddingstone. Where Pownal Mountain reaches the Hoosack, (T) 3 miles north of the college, are some hills of this aggregate. It is composed of rounded masses of quartz, chlorite, and limestone, of various sizes, connected by an argillaceous cement.
19. Potters' Clay. Excellent for vessels of common pottery.
The minerals of this section, it is obvious, are not very important; but as connected with a transverse section of the country, they possess considerable interest. For this reason they have been particularly mentioned.