Miscellaneous Localities of Minerals. 53 



perhaps three to four thousand dozen, which are disposed 

 of in New-England, New- York and Philadelphia — 73 cents 

 a dozen are obtained for thenn, 



30. Mica Slate, Branch Factory, one mile N. W. from 

 Woonsocket Village. 



31. Basalt, found in two dikes or walls crossing the 

 Branch of the Blackstone, at the Branch Factory, a few 

 yards from and parallel to each other, nearly two feet wide, 

 running about N. E. and S. W. consisting of columns of 

 various sizes and figures in mica-slate. 



32 and 33. Sandstone, overlying argillite, in immense 

 ledges near the Blackstone, in Cumberland and Smithfield, 

 some of it is traversed by perpendicular veins of white 

 quartz. 



34. Argillite^ on the banks and near the Blackstone un 

 derlying the sandstone. Cumberland and Smithfield. 



35. Granite, Cumberland, a ridge running N. and S. be- 

 tween Cumberland Hill and Diamond Hill. 



36. N. W. from Diamond Hill and E. of the granite. 

 37 and 38. Quartz, fair specimens of the formation of 



"Diamond Hill." 



39. Anthracite, Cumberland. 



40. Anthracite, North Providence. 



41 and 42. Shale, do. at Valley Falls. 



43. Limestone, and 



44. The Argillite, which accompanies it. North Prov- 

 idence. 



45. 4G, 47, and 48. A suit of the Gray Wacke slate 

 of Pazvtucket Falls and village. 



49 and 50. Magnetic Iron stone. This singular stone is 

 very abundant in rounded masses, scattered over the sur- 

 face about Cumberland Hill, Providence, and in Foster. 



I intended to have added to the foregoing specimens a 

 more detailed and correct sketch of the Geology &c. of 

 this state, which for want of leisure and better health, I 

 must postpone. 



Providence, July 31, 1824. 



