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3d. The side-walls of the larger masses of ore, though not straight 
or even, or perfect for great distances, yet are so to a limited extent, 
and the interruptions are frequently projections of ore into the adjacent 
wall in the form of veins ; a circumstance by which the continuity of 
the wall is broken, but does not seem to mihtate against the idea of a 
vein. 
4th. All the repositories of ore, when they can be traversed in their 
whole width, present all the characteristics of a vein, enlarging and di- 
minishing at different points, but upon the whole preserving a given 
width, or increasing downward at a slow rate, and cutting across the 
strata, sometimes at a small angle, and then nearly at right angles, and 
presenting, on one side at least, a wall of rock, more or less perfectly 
defined. 
I may with propriety, refer to some examples of veins, the charac- 
ters of which, cannot be doubted. The Arnold Hill, in the vicinity of 
Clintonville, is one, among many, to which reference may be made. 
On this hill, there are 4 veins, running parallel or side by side ; their 
width varies, from 3 to 11 feet. One of these, viz. the old blue vein, 
as it is called, has been worked to the depth of 200 feet, and in length 
100 rods. Throughout this extent, it preserves an uniformity of width, 
which is on an average, of about 4 or 5 feet. In some portions of the 
vein, it is only 2, in others 8 feet. It dips to the west, at an angle 
of about 75°. It has regular side walls, though less perfect on the 
west side, than on the east. The primary rocks of this country, pur- 
sue a course nearly northeast and southwest. In some instances, it is 
difficult to detect a deviation in the vein from the general course of the 
rocks. This is the case with the Old Crown Point ore, in the town of 
West-Port. This vein, is about twelve feet wide, and has been quar- 
ried out for half a mile, in the direction of the strata. This ore, so 
far as can be discovered, lies between the layers of gneiss, without 
crossing or shifting, from one layer to another. This would be con- 
sidered a bed, according the usual definition of the term ; but as there 
are so many instances, of a shifting of the ore, from between two given 
layers to those adjacent, may we not rather infer, that this is only a 
particular instance, in which the ore continues in parallel position, a 
greater distance than ordinary. 
5th. There is, however, one particular in which some of the appa- 
rent beds, differ from true beds ; it is in this, though they pursue a di- 
