208 Geology, ^c. of the Connecticut. 



14. Mint of Magnetic and Micaceous Oxide of Iron, in Haw- 



ley. 



This exists in the north western part of the town, in beds, 

 in talcose siate. The folia of the slate are nearly perpen- 

 dicular to the horizon, and the principal bed of the ore va- 

 ries from !«ix inches to three or four feet in thickness, and 

 numerous thin beds occur at the sides. The mine has beea 

 opened twenty or thi:ty rods long, and thirty or forty deep. 

 The magnetic oxide is probably most abundant : but the 

 micaceous oxide has not till lately been wrought, through 

 an imprersion that it could not be smelted! One or two tons 

 of it lie beside the mine ready for the mineralogist. I have 

 never seen any ore of this sort, that will bear any comparison 

 for beauty and richness of appearance with this. It has a 

 schistose, gently undulating structure, and plates of it may 

 be easily obtained, a foot in diameter, possessing a highly 

 glistening aspect. But it is no very easy matter to get at 

 this mine, on account of the extreme roughness of the coun- 

 try for several miles around it. 



15. Mine of Magnetic and Micaceous Oxide of Iron, in Ber- 



nardston. 



This occurs in beds in talco-argillite, and is so similar to 

 the last described, that additional remarks are unnecessary. 

 1 do not know to what extent it has been wrought. 



16. Vein of Micaceous Oxide of Iron, in Jamaica in Verinont, 



This exists in dolomite, and is very beautiful. It has been 

 used as a substitute for smalt, and answers well. 1 do not 

 know its extent. It is a few miles beyond the northern hm- 

 its of the map. 



17. Mine of the Brown Oxide of Iron, in Salisbury in Con- 



necticut, 



This, as well as the two following mines, occurs a consid- 

 erable distance beyond the limits of the map. I merely men- 

 tion them, however, because of their interesting nature ; and 



