158 Miscellaneous Notices, ^c. 



ry, containing bivalve shells, several of which are in my pos- 

 session, and the "■cells,'''' appear to be made by some aquatic 

 insect. The ridge abounds in different kinds of flmt, horn- 

 stone, jasper, &e. 



No. 42. Three varieties of sandstone, used in buildings, &c. 

 Marietta. 



No. 43. A beautiful deep red ochre, here called Terra de 

 Sienna, a name frequently given to ochres, as an indicaiion 

 of excellence ; this is said by pamters to be good ; from the 

 Yellow springs, Green county. 



No. 44. Yellow ochre. Fearing township. Duck creek, a 

 large bed. 



No. 45. Tufa and earth, deposited in vast beds, at the 

 yellow springs, Green county Ohio. 



No. 46. Red ochre, from Little Muskingum creek, Law- 

 rence township. 



No. 47. Alum earth, from Wolf creek, township of Wa- 

 terford ; extensive bed. 



No. 48. White clay, used for pots in the glass manufacto- 

 ry at Louisville, from Perry county, a few miles S. W. from 

 Zanesville, and near the " Flint Ridge." 



No. 49. Pyritous sand. Marietta. 



No. 50. Pyrites, found in digging a well on Wolf creek. 



No. 51. Clay, from the " deep cut,'''' Ohio canal, thirty feet 

 below the surface. 



No. 52. Sulphate of hme, found in digging a well ; depos- 

 ited in the crevices of compact brown clay ; commencing 

 six feet below the surface, and extending fifteen feet ; earth 

 quite full of it ; twenty one feet below the surface a bed of 

 pyrites four feet thick ; then a bed of stone coal three feet 

 thick, and then water; well dug on the hills, or broken up- 

 lands, eight miles East of Marietta. 



The rock formation in that part of the country, where I 

 reside, being altogether of secondary character, is not ve- 

 ry rich in minerals ; iron ore, and the different sulphurets, 

 being the principal productions that have yet come to light — 

 I have in my possession a very fine piece of copper that 

 was obtained from pyrites, a few miles from Marietta, on 

 Duck Creek — the bed is said to be extensive ; the pyrites 

 were first roasted, then pulverized, and melted out in a large 

 crucible by a blacksmith's fire ; I should judge they aflforded 

 from thirty to fifty per cent of the pure copper ; from one 

 crucible, were obtained three or four ounces — should any 



