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Updated: June 25, 2025
I did not meet with a single specimen of true trachyte; though some of the paler lavas, when abounding with large crystals of the harsh and glassy albite, resemble in some degree this rock; but in every case the basis fuses into a black enamel. Beds of ashes and far-ejected scoriae, as previously stated, are almost absent; nor did I see a fragment of obsidian or of pumice.
The day was closing in by this time; and our man was waiting with the horses at the foot of the great pyramid; and with him an Indian, whom we had caught half an hour before, and sent off with a real to buy pulque, and to collect such obsidian arrows and clay heads as were to be found at the ranchos in the neighbourhood.
This plateau of Atotonilco el Grande, called for shortness Grande, is, like most of the high plains of Mexico, composed mostly of porphyry and obsidian, a valley filled up with débris from the surrounding mountains, which are all volcanic, embedded in reddish earth.
I picked up, on the plateau of the summit, a bit of obsidian Indian chipping, refutation in itself of the frequently repeated statement that Indians do not climb high peaks. A month was spent with great profit in and about the Sierra Reserve, and one might go there many summers, ever learning something new.
The sacrifices which the Mexicans offered to their idols at the time of the Spanish conquest were cut up by means of knives of obsidian, which they obtained from the lavas of their volcanoes. In the Bible we have several traces of the same universal custom.
Using both the red garment and the cloak, employing in her task the obsidian knife and strips of green fiber, she had made for herself a garment which it would have been hard to classify and yet which was astonishingly becoming. As much as anything Kendric had ever seen it resembled a stylish and therefore outlandish riding habit. She wore Zoraida's shoes and stockings.
This gave a pretty effect and seemed to add to the steering qualities of the missile. Two kinds of points were used on Ishi's arrows. One was the simple blunt end of the shaft bound with sinew used for killing small game and practice shots. The other was his hunting head, made of flint or obsidian. He preferred the latter. Obsidian was used as money among the natives of California.
"Here is the rest of the outfit," said Edgecombe, holding forth a bow and several feathered arrows with obsidian heads. Professor Featherwit gave a low, eager cry as he handled the various articles, both face and manner betraying intense delight, which found partial vent in words a little later. "Wonderful! Marvellous! Superb!
This subject is the more worthy of being investigated, since it is generally interesting to the geology of volcanoes; and since that excellent mineralogist, M. Fleuriau de Bellevue, after having examined Italy and the adjacent islands with great attention, affirms, that it is highly improbable that pumice-stone owes its origin to the swelling of obsidian.
There were bits of obsidian and choice feathers for arrows, some pieces of flint and a couple of steel, an old knife, a heavy bone needle, and strips of dried gut. Nothing very useful to you or me, perhaps; but nothing useless to the savage life of the ape-man.
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