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Of course, a long time is taken over it, especially the polishing, which is done with oil and whiting, if it can be got powdered pumice if it cannot.
I walked on Shore and Killed two Elk neither of which was fat, we saved the best of the meat, one beaver Shot to day. the countrey on both Sides butifull no appearances of either Coal or pumice Stone & burnt hills, The Salts of Tarter or white aprs. of Salts are yet to be Seen.
This cone is composed of layers of scoriae, pumice- stones, and their fine detritus, with interposed beds of trachyte and basalt, which descend often in uninterrupted sheets until they reach and spread themselves round the base of the mountain.
Another stately figure, evidently a Roman matron, has gathered together her little treasures, with which she hopes to escape; her draperies, disordered and caught up at one side, display limbs of sculptured beauty. An aged man apparently an invalid from the thin and shrunken extremities rests with his head leaning on his hand exactly as he was overtaken by the fearful storm of pumice and lava.
Where it was imprisoned, between the high banks of Skapta, the lava is five or six hundred feet thick; but as soon as it spread out into the plain its depth never exceeded one hundred feet. The eruption of sand, ashes, pumice, and lava, continued till the end of August, when the Plutonic drama concluded with a violent earthquake.
Its base consists almost entirely of pumice, in which are included fragments of basalt and other lavas, pieces of burnt shale, slate, and sandstone, and numerous trunks and branches of trees. If, as is probable, this trass was formed during the period of volcanic eruptions, it may have originated in the manner of the moya of the Andes.
For miles and miles, above and around, great billowy masses, tossed and twisted into an infinity of fantastic shapes, arrest and weary the eye, lava in all its forms, from a compact phonolite, to the lightest pumice stone, the mere froth of the volcano, exceeding in wildness and confusion the most extravagant nightmare ever inflicted on man. Recollect the vastness of this mountain.
SCORIAE and PUMICE may next be mentioned, as porous rocks produced by the action of gases on materials melted by volcanic heat. SCORIAE are usually of a reddish- brown and black colour, and are the cinders and slags of basaltic or augitic lavas.
The day was clear and hot, and I saw the island, not smiling with beauty, but staring with naked hideousness. The lava streams are covered with hummocks, and are rugged to a degree which, geologically speaking, is not of easy explanation. The intervening spaces are concealed with layers of pumice, ashes and volcanic tuff.
The next process, called polishing, was effected upon a wooden wheel, fed with pumice or rotten-stone and water, and the final touch was given by another wooden wheel, and a preparation of tin and lead called putty-powder.
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