Show CAME IN TWO SECTIONS ecord of the th Earthquake ake as Given Give by California Scientist Oakland Cal Cal April 19 9 A O 0 Leusch L usch Tier n r director of ot the tho Students Student Observatory t tory tori of of the University of California to todi tod di d dr v gave gae out the thO following record of the thea a r The principal pal part of the earthquake i ie te e In two sections the te first frt series Aeries of 1 I S lasting for about ato forty sec seo fort is The vibrations diminished consid conid Cr during the following term ten el seconds se If ri their thep th continued wih with renewed vigor vigorSo fo So bout about twentY Jv seconds more But v f at t this writing about 12 1 l m the dis tu sance nce has ha not s yet yel subsided as assi assi si dt shocks ar arC t being recorded at Ire fre JI rit intervals on the Ewing Eing The he principal direction of motion o from t to north norths A 1 1 i iT T A i A r I northwest The remarkable feature of or orthis this earthquake aside from its intensity was wa Its rotary motion moton As seen from the print the Sum total of all displacements represents a a very regular rogla ellipse elpe Sand nd some of Q the lines representing the motion moton can n be traced along th the whole ee The three severest earth en quake on record in this vicinity are re those of Oct Oct 21 1 March 30 3 1889 1 and that of of today toay The result resul of observation indi indicates cates that our heaviest shocks shock are In the te direction so to west wet In I that respect the records of the three heaviest earthquakes agree age entire entirely ly l But they haye n ye several other oth r features f at atin in common One of these the is i that while the te displacements displacement are ae very ver large the V bration braton period is comparatively slow sion amounting to about atut one s second cond in th last two big earthquakes |