An earthquake was felt in Granada in southern Spain early on July 12. According to human perception, the shock lasted for about ten seconds, although no damage or casualties have been reported. The epicentre was estimated to have been some eighteen miles from the city, and a slighter aftershock was felt a few minutes later. Since earthquakes show a marked tendency to recur in areas once affected, it is not surprising that earthquakes such as this one should occur. In southern Spain such shocks and smaller tremors are by no means infrequent, though probably one of the largest earthquakes to occur in Spain was that on November 1, 1755, near Lisbon, the written records of which were studied by the late Dr. C. Davison.