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Updated: September 12, 2025
Vesuvius is 133,000 palmas, or eighteen nautical miles in circumference. The horizontal distance from Resina to the crater is 3700 toises. Italian mineralogists have estimated the circumference of Etna at 840,000 palmas, or 119 miles.
"Now, observe," he said, "a grave responsibility rests on your shoulders. The Market depends upon you. You must not ask in any number of outsiders to witness these experiments. Have a few mineralogists and experts, if you like; but also take care to invite representatives of the menaced Interests.
In the surrounding parts of New York are many mineralogical localities, known to no others than a few professional mineralogists, etc., and from which an excellent assortment of minerals may be obtained, which would well grace a cabinet and afford considerable instruction and entertainment to their owner and friends, besides acting as an incentive to a further study of this and the other sciences.
Seven hundred years passed away, when Napoleon came, and as he swept down over Italy, gathering her art-treasures, he ordered the "Holy Grail" to be conveyed to Paris. It was deposited in the Cabinet of Antiquities in the Imperial Library, and the mineralogists quickly discovered it to be glass.
Thus, between our existing Earth, the phenomena of whose varied crust neither geographers, geologists, mineralogists, nor meteorologists have yet enumerated, and the molten globe out of which it was evolved, the contrast in heterogeneity is sufficiently striking.
The only exception I can think of to this rule is aventurine, a substance known to mineralogists, which in its natural state cannot compare with the artificial preparation of it. Aventurine is a rare kind of quartz; and the same name is given to a brownish-colored glass much resembling it, which is manufactured at Murano.
Gray, with his indefatigable zeal, will gain upon his competitors. . .The geologists and mineralogists form the most numerous class among the savans of the country.
He disappeared in the great whirl of men and other circumstances which fills this wonderful country. From time to time, during five years, I had made inquiries concerning him of mineralogists, botanists, and other vagrant characters, without getting the smallest hint as to his whereabouts. At last he had turned up as the private prophet of three middle-aged widows.
I therefore now proceed to take a view of the natural history of coal strata, a subject which mineralogists seem not inclined to engage with, although the most ample data are to be found for that investigation. SECT. II. Natural History of Coal Strata, and Theory of this Geological Operation.
Look then into a granite quarry, and spend a few minutes in examining the rock. It is not of perfectly uniform texture. It is rather an agglomeration of pieces, which, on examination, present curiously defined forms. You have there what mineralogists call quartz, you have felspar, you have mica.
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