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[Assembly 
find a market there, inasmuch as the falls form one of the finest water 
privileges in the northern counties, and besides, there is not a lack of 
wood for coal. 
In this connexion, I may mention another new bed, on or near Mus- 
colunge lake, which, in case of the improvement of the navigation of In- 
dian river, could be transported to the falls for reduction by water. 
Qualities of the Specular Ore, 
It is particularly valuable for castings, as it runs smooth and exhibits 
a beautiful finish. It is not used in the forge, or made directly into 
malleable iron. It makes, however, good bar iron from the pig. 
It was supposed formerly that the bright crystallized variety could 
not be worked. It was undoubtedly a whim or prejudice of the work- 
men employed in the first trials. It was said to contain arsenic, and to 
have created sickness and vomiting. Proper trials, as was predicted, 
have proved the falsity of those assertions. It is an excellent ore, does 
not contain arsenic, and never exhales an unpleasant or poisonous va- 
por. As a general rule, the opinions of many of the bloomers and fur- 
nace-men are to be received with some allowance. 
Associated Minerals. 
There seems to be a great uniformity in the kind of mineral sub- 
stances found in these beds. They indicate, therefore, a common ori- 
gin. We may enumerate the following as constant attendants of 
the specular ore : sulphuret of iron, quartz, either amorphous or 
in crystals, an interesting and rare form of the latter is the dode- 
cahedron, carbonate of iron in amorphous masses or in crystals, 
sulphate of barytes, carbonate of lime in thin fibrous individuals, and 
also in crystals. The most common form is the nailhead spar. Ser- 
pentine, green and brown, with a remarkable distinct conchoidal frac- 
ture, and a very perfect resinous lustre, sulphate of iron, formed by 
decomposition of the sulphuret. 
Origin of the Specular Oxide. 
Various opinions have been expressed on the mode of filling mineral 
veins. Some adopting the theory of injection from beneath ; others that 
of sublimation, and others still an electro-magnetic action, or the sepa- 
ration and transference of particles from the parent rock, into cracks or 
fissures, by an electrical agency. It is an agency well illustrated by the 
currents which flow from the positive to negative side of a galvanic bat- 
