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[Assembly 
In Gouverneur, a bed of this ore contains twigs, roots and leaves, 
replaced by the ore; these specimens preserve their organic struc- 
ture so perfectly, that they are often recognized as birch, beech, &c. 
This ore is found in several places in Canton, but none of the 
beds are sufficiently extensive for use. A bed of this ore was 
worked in Lisbon, (and the ore manufactured into iron at Can- 
ton,) several years since, but is nov^ abandoned: it might doubt- 
less be reopened to advantage if it is sufficiently extensive. 
In Jefferson county, at Carthage, bog ore has been worked and 
manufactured for 16 years, but the supply is decreasing. From 
the proximity of the primitive rocks, and their extension into the 
eastern part of this county, there is much probability of the ore 
being found in larger quantities in that direction. 
Bog ore exists in beds of greater or less extent in almost every 
town in St, Lawrence county, and when the attention of the pub- 
lic shall be directed to them, they will, in many instances, prove 
valuable. 
Origin of Bog Ore. 
Bog ore is a deposition resulting from water, which as it loses 
its carbonic acid, deposites the iron before held in solution: thus 
continual accumulations are made, which in time form extensive 
beds. The decomposition of rocks containing iron, afford con- 
tinual supplies of the material which is washed away by rains; 
the water, by excess of carbonic acid, dissolving the oxide and 
carbonate of iron. The decomposition of pyritous rocks affords 
large quantities of oxide and subsulphate of iron, the latter of 
which is decomposed, and thus it is one oi the most, if not the most, 
prolific source of bog ore. The specular ores also, furnish the 
material for bog ore in large quantities. 
Beds of bog ore are considered as indications of " rock ore," as 
it is termed, in the vicinity; but this is not uniformly the case, for 
we have observed deposites of bog ore which resulted from the de- 
composition of rocks containing very little iron, and indeed where 
there is no iron, except with sulphur, in the iron pyrites: so that 
it does not follow, that " rock ore" exists always in the vicinity 
of bog ore. 
