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mounds, the Platte mounds, Sissinawa mounds &c) which rise several hundred feet above it. In these the limestone appears more silicious than is noticed elsewhere, and its superior hardness may in part have been the cause of these mounds remaining like monuments of the devestating currents that must have given the surface around its present form; while the huge blocks, tipped out of their horizontal position lie on the steep sides as additional evidence of the wasting waters.

"Throughout the extensive trace [known] defined as the lead region, lead ore may be sought for with prospect of success on every township and on almost every square mile. And fortunately it is so well watered, and the little streams have so rapid a fall that power for furnaces may almost always be obtained near the mine. New discoveries are continually made, and with every one, further light is thrown upon the true character of the ranges of [illegible] containing the lead and copper ores; by which results then can be traced with greater certainty from one tract to another without depending entirely on the present imperfect system of "prospecting".