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McLean got private information from a former servant of his at that post, which led to an expedition to the north-east end of the lake, where he made valuable finds of copper and other minerals. Another trip was made, and additional claims were taken, and on Mr. McLean's return with a lot of samples of ore, he with another prospector, came out, and proceeded to Chicago.
In the Islands I have not heard that any subterraneous treasures have been discovered, though where there are mountains, there are commonly minerals. One of the rocks in Col has a black vein, imagined to consist of the ore of lead; but it was never yet opened or essayed.
One might think that streams of water apparently so pure would at last freshen the lake, but in reality they are carrying along invisible particles of mineral matter which add to its saltness day by day. The dry air steals away the water from the lake as fast as it runs in, but cannot take the minerals which it holds in solution.
Varying with the amount of the superfluity, there will be countless developments in this second life, the life of the mind; it may be the mere collection and labelling of insects, birds, minerals, coins, or the highest achievements of poetry and philosophy.
They included fishes, some rare mammalia, reptiles, shells, birds, an herbarium of some three thousand species of plants collected by himself, and a small cabinet of minerals.
How the state fared generally as regarded the farming of its revenues and the contracts for supplies and buildings, may be estimated from the circumstance, that the senate resolved in 587 to desist from the working of the Macedonian mines that had fallen to Rome, because the lessees of the minerals would either plunder the subjects or cheat the exchequer truly a naive confession of impotence, in which the controlling board pronounced its own censure.
This great work was, of course, never completed, though he laboured through three volumes; but when he tired of it, he would turn his book upside down, and begin at the other end with other matters; so that the red books contain all sorts of notes on his minerals and travels, reports of sermons, and miscellaneous information, besides their professed contents; in this respect also being very like his later works.
In nature, shells and other relics of animals or plants are often removed by being dissolved by percolating waters, and the molds are either filled with sediments or with minerals deposited from solution. Interior casts of shells reproduce any markings on the inside of the valves, and casts of the interior of the skulls of ancient vertebrates show the form and size of their brains.
They are falling in year by year, but we cannot afford to wait until they have all fallen in if we are effectively to deal with a pressing problem. I do not suggest that upon the acquisition by the State of the minerals all the existing leases should automatically determine. But the State should have power to determine them on payment of compensation for disturbance.
Besides, as different currents meet in the fissure, some ascending, some descending, and some coming in from the sides, the chemical reaction of these various weak solutions upon one another and upon the walls of the vein precipitates the minerals of vein stuffs and ores.
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