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In the Little Cumbray, one of the Western Islands, near Arran, the amygdaloid sometimes contains elongated cavities filled with brown spar; and when the nodules have been washed out, the interior of the cavities is glazed with the vitreous varnish so characteristic of the pores of slaggy lavas.
This conclusion is not deduced from the observations I made at the southern declivity of the littoral Cordillera, between the Morros of San Juan, Parapara and the Llanos of Calabozo. The greyish blue amygdaloid contains fendilated crystals of pyroxene and mesotype. It forms balls with concentric layers of which the flattened centre is nearly as hard as basalt.
Balls of this amygdaloid are enclosed in the grunstein; and this grunstein alternates on one side with a green slate, on the other with the serpentine of Tucutunemo.
In the little stream were many pebbles of vesicular trap, probably an amygdaloid with the kernels decomposed, but containing particles of olivine; also pebbles of a syenitic compound, consisting of quartz, hornblende, and felspar; and of compact felspar, mottled green and white, the green colour probably being due to chlorite or green earth, and they enclosed also decomposed crystals of mica and hornblende.
These close relations of rocks so different in appearance and so likely to embarrass the observer give great interest to the vicinity of Ortiz. If the masses of diorite and amygdaloid, which appear to us to be layers, are very large veins, they may be supposed to have been formed and upheaved simultaneously.
Then as they walked slowly homeward, he took Sophia's hand, and swayed it gently to and fro to the old fiddler's refrain, "'Little I thought what love could do." "Oh, how this spring of love resembleth The uncertain glory of an April day!" "Hammering and clinking, chattering stony names Of shale and hornblende, rag and trap and tuff, Amygdaloid and trachyte."
SALA, a hall, dining-room. SERAPE, a Mexican blanket; see p. 169. SOMBRERO, a hat. TACUMENILES, pine-shingles for roofing. TEMAZCALLI, Indian vapour-bath; see p. 301. TEFONAZTLI, Indian wooden drum. TETZONTLI, porous amygdaloid lava, a stone much used for building in Mexico. TIENDA, a shop; see p. 82. TIERRA CALIENTE, the hot region. TIERRA FRÍA, the cold region.
Here the same plant has in the same way affected the porous amygdaloid with which the pyramids are faced, and has cut up the surface sadly; but the vegetation which covers them will at any rate defend them from the rains, and now centuries will make but little change in the appearance of these remarkable buildings.
"It was faith, the highest faith," said Bessie proudly, and looking into my eyes with her old saucy dash, "to know, to feel sure, that that sealed paper concerned nobody but me." And so she has ever since maintained. A nodule of amygdaloid, a coarse pebble enveloped in a whitish semi-crystalline paste, lies on the table before me.
In the other solution of the problem, the masses of phonolite, amygdaloid, and grunstein, which are found in the south of the ravine of Piedras Azules, are separated from the grunsteins and serpentine rocks that cover the declivity of the mountains north of the ravine.
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