June-July 1890, Trip to Alaska; June-August 1893, Trip to Norway Image 10
14 intervals of 20 or 30 minutes occur without any considerable fall. Then 3 or 4 immense [discharges] will take place in [the same number of] as many minutes The sound they make is like hearing thunder with prolonged roar after deep thudding sounds A perpetual thunder storm easily heard 3 or 4 ms [...
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Language: | English |
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Scholarly Commons
1890
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Online Access: | https://scholarlycommons.pacific.edu/jmj-all/1857 https://scholarlycommons.pacific.edu/context/jmj-all/article/2856/type/native/viewcontent/fullsize.jpg |