. Memoirs of the Bernice Pauahi Bishop Museum of Polynesian Ethnology and Natural History. Natural history; Ethnology. 96 Kllanea and Mauna on ail ancient flow, one of which was seven feet Ingh, eighteen in,ches external diame- ter, and with a bore of eight inches. It was brittle, and on breaking it off, 1 found the hole was six feet deep, making its whole length tliirtceii feet. Others of the same height were near b}-, and their sides were always thicker towards the source of the flow, Kxternally they are rough like aa, but the top was smoatli and sometimes projeAed like an umbrella. Wh
. Memoirs of the Bernice Pauahi Bishop Museum of Polynesian Ethnology and Natural History. Natural history; Ethnology. 96 Kllanea and Mauna on ail ancient flow, one of which was seven feet Ingh, eighteen in,ches external diame- ter, and with a bore of eight inches. It was brittle, and on breaking it off, 1 found the hole was six feet deep, making its whole length tliirtceii feet. Others of the same height were near b}-, and their sides were always thicker towards the source of the flow, Kxternally they are rough like aa, but the top was smoatli and sometimes projeAed like an umbrella. Where several were in close proximit}^' a slab of lava was snpported ii^isiiilB^^^^^^^^^ *lsMBIiiiliEilliiJI^ ^M?MS:iS^^. oprm rx like a roof on eohimns (see Fig, 43), The lining of the tnbe was smooth and nmcli more compact and vitreons than the exterior. The trees which, served as edres, if not bnrncd have entirely decayed, and were mostly tree ferns, altlnnigh I think that I detetH:ed some oliias. 1 followed the stream dow'ii some distance to learn tlie ean,se of its subsidence, which must have been rapid, and fonml that a fissnre liad opened and swallowed most of the lava. , Judging from the great size of the trees growing over its surface, the flow must be quite ancient. The surface of the casts gave fresh indication of the process l)v wliicli aa is formed and seems to prove that the more refractory par- ticles of the hava cool at an appreciable time before the general molten mass ce^ases to be liquid, nincli as the less soluble salts in a saline solution crvstallize first on cooling; L474]. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Bernice Pauahi Bishop Museum. Honolulu : Bishop Museum Press
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Keywords: ., bookcentury1800, bookdecade1890, books, booksubjectnaturalhistory
