58 Ores of Iron, Manganese, &c. in Vermont. 
The iron ore bed is very extensive, and will probably not 
be exhausted for several ages. Syidieed 
pa 
pletely from the. water, there must be a shovel full or two 
of good lime, thrown into the cistern, in the first washing. 
It is now yellow ochre. In order to make it brown, or red, 
we expose it to the fire in an oven or kettle.” 
 Tlately examined the iron works and: iron ore of Pitts- 
in limestone. The ore is less productive than the Benning- 
ton ore. . It yields, as I was told by the proprietor, Mr. 
Nathan Gibbs, about 25 per cent. “or four tons of the ore 
make one ton of iron.”’ He informed me, that the quantity 
nufactured, yearly at his works, was about twenty tons of 
dar iron, and cighty tons of cast iron, consisting of stoves, 
“potash kettles, &e. &e. I may give you, in a future letter, 
iccount of the iron ore, manufactured at other places 
ape 
ae 
