Show regarding earthquakes felix L oswald says in the november north amerian menn kwiej that the spanish i americans have learned to diagnose the first symptoms of a dangerous quake in nineteen out of twenty cases the degree of that danger is indicated bythe by the scale odthe of the vibrations vibration sf the increasing or decreasing violence of the successive SHOCKS N in a the former case the first concussion or series of concussions is a warning of w worse or se things to come in the latter a rule with few exceptions encourages tile the hope that has done his worst for that day and probably for that month for the same rule holds good for a protracted fotr eted series of tremors if a period of earthquakes earthquakes begins with a day of destructive shocks followed by a week of feeble reverberations the omen gives promise of peace and wiggins prediction of a very characteristic te period of that sort being but the prelude of a far more ruinous upheaval would have made few dupes in any part of spanish america the pro progress ress of geology has encouraged the T hope ope that tha t its revelations will yet enable us to predict earthquakes with nearly as much certainty as our meteor have already learned to predict atmospheric 11 |