. Memorie del Bernice Pauahi Bishop Museum di Etnologia polinesiano e Storia Naturale. Storia naturale; Etnologia. Cambiamenti nella Haleniatiniau, 189 angolo. A livello del lago, e metà riempito da essa, è stata una grande caverna che si estende in una vSouth- direzione est dal Lago [vedi Fig. 116]. Le dimensioni sono state apparentemente settantacinque piedi attraverso e di quindici piedi dalla superficie del lago per il tetto della grotta. Esso può essere visto in dalla sponda opposta per circa cinquanta piedi. Questo potrebbe essere stato il condotto attraverso il quale la lava è stata scaricata completamente, sebbene manifestamente non era il bot

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. Memoirs of the Bernice Pauahi Bishop Museum of Polynesian Ethnology and Natural History. Natural history; Ethnology. Changes in Haleniatiniau, 189 angle. At the level of the lake, and half filled by it, was a great cavern extending in a vSouth- easterly direction from the lake [see Fig. 116]. The dimensions were apparently seventy-five feet across and fifteen feet from the surface of the lake to the roof of the cave. It could be seen into from the opposite bank for about fifty feet. This may have been the duct through which the lava had been drained, although it manifestly was not at the bottom of the lake, for up to July 16th, that had continued to rise and fall from five to ten feet a day, and constantly threw up fountains, somew^hat more actively than before its subsidence. The entire area of subsidence is estimated to be a little less than eight acres, about one-half of wdiich fell into the lake. While the breakdow^n w^as taking place there were many slight tremors of the banks generally resulting in the precipitate retreat of the observers from the edge, but although the danger was great the spectacle was so grand and fas- cinating that the party returned again and again to watch it. At the Volcano House two slight earthquakes were felt on the afternoon of the nth, and one vigorous one at 2 a.m. on the 12th. During the week several slight shocks were felt in the town of Hilo, thirty miles away, yet none were felt at Olaa, half way between, nor at Kapapala, fifteen miles in the opposite direction, although the latter is a place peculiarly susceptible to earthquakes.'^^ Mr. Dodge's survey made on July 30th (Fig. 118) shows the changes wrought in Halemaumau that Mr. Thurston has so graphically described. The figures both on the plan and sections are the distance below the Volcano House datum. August 7, iSg^. Walter F, Frear.—The lake was active, the largest fountain (Old Faithful) playing once or twice a minute, coming up each time as one, two or three bubbles

Parole chiave associate all'immagine

• bookcentury1800
• bookdecade1890
• booksubjectnaturalhistory
• libri