Show tue THE AT SIMODA we find in the tribune the following siy ili abstract of bf the report of prof prot bache to the Aine american rican scientific association for the government of science on earthquake waves on the western coast of the united states on oil the and of december dei bemb I 1 r of lat last yean year on the of december 1854 at 9 AM A M an earthquake occurred at simoda on the island of ciphon japan that resulted in the wreck of the russian frigate orl fri wrate grate diana The harbour barbour was first emptied of water thern thenn came in an enormous wave which again receded it appeared from the rev mr iones jones that the whole character of the harbour of sim oda previously pr piously surveyed by the powhatan has his been changed by the earthquake A report from t the he bonin islands is not sufficiently exact to use farour main maln purpose but points to tt simo da as the centre of disturbance simoda according to the rev mr jones la is volcanic bonin appears not to be now the coat coast survey has th three ree self seif acting tide grages at astoria on oil columbia river san franciaco francisco Franci francl ico and san diego they record the rie rise of the cde on a cylinder turned by a clock the apparatus is protected more or less from the tha oscillations lations that wind waves would cause which only causes a trembling of the index or stylus the guage at As toria torn was but slightly affected by the math rath quake wave owing to the lae bar on the tile river and the distance it had to ascend at sani sari francisco 4 miles from simoda the wave arrived 12 hours 16 10 minutes after the beginning beg ining of the earthquake A series of seven wave each about h half a if an hour in duration or 35 minu minute tep tee each ser sen cris cries eries erles successively sm smaller liller and separated by a quiet time of an hour from the preceding was waa recorded at san francisco at san diego the wave had traversed miles in 12 hours 38 minutes and produced likewise a series of sev en waves each nearly corresponding to those at san francisco but the second series stronger than the first and third in height they were less I 1 the highest hi hest at san francisco beings being 7 of a doot fool at san diego 6 the waves nt at san diego CO could uld not have come from san francisco aa as they would have arrived much later the vel yet which a wave travels depends on the depth of the ocean the second and third series eerie were but repetitions of the first waye wave that had laid reached the same esme points traveling th through shallower water The calculation calculations based ct on these data give for be the pacific ocean a depth of broto to I 1 fathom fathoms sIt fc jt is remarkable how the estimates of the oceans depth have grawn li leps eps la place assumed assum edit it at JO at 35 while this estimate e 13 brings it down to about 2 miles |