66 REPORTS ON THE STATE OF SCIENCE. 



A.D. 



1546 Earthquake at the end of May, mostly in Olfus. II 



1652 Earthquake shocks at Candlemas eve (March 2) ; no localitjtfJiientioned. I 



1554 Severe earthquakes which lasted through half a month, so that people had to 

 live in tents. No particular locality mentioned, but it is stated that at the 

 same time an eruption of Hekla was going on, which lasted six weeks. The 

 date is given as between Orossmass (the Festival of the Invention of the 

 Cross, May 3) and ' fardag,' which means the last four days of May. I 



1578 Earthquake in Olfus in the evening of All Saints' Day (November 1), supposed 

 to be caused by an eruption of Hekla, which was going on during that 

 autumn. II 



1581 Great earthquake in the month of May (between Crossmass and fardag), 

 particularly in Rangarvellir and Hvolhreppr. Ill 



1584 ' Great earthquake in Iceland, but it is not known in what part it happened ; 

 most probably, however, in the South Country.' II 



1597 Several severe shocks of earthquake at Skalholt on January 3, in connection 

 with an eruption of Hekla. In the same spring, after the eruption of 

 Hekla, there was a destructive earthquake in Olfus. II 



1613 An earthquake in the South Country, particularly severe in Skeid. II 



1619 Earthquakes after midsummer, also eruption of Hekla ; no particular date or 

 locality mentioned. I 



1624 Continual earthquakes all through November, particularly in Floi. II 



1630 Three earthquakes during the winter, one on February 21, throughout the 

 South Country. Damage done at Skalholt, &c. II 



1638 An earthquake in the South, did damage at Olfus ; no date given. II 



1657 Great earthquakes in the South and in the West, mostly in Floi and in 

 Fliotshlid, where damage was done, March 16. Ill 



1 671 Great earthquake in the summer in Grimsnes and Olfus. Ill 



1693 Strong earthquakes all over the Sudurlandunderland, which were also felt at 

 sea, connected with an eruption of Hekla which commenced February 13. I 



1706 In the course of the winter there were several earthquakes — viz., two in the 

 evening of January 28, one in March, one on April 1, and the most severe 

 on April 20 in the morning which wrought great destruction in Olfus. It 

 was also felt in Floi and even, though weaker, in the Faxafloi area. Ill 



1724 Earthquakes in the month of August, mostly in Arnessysla. This disturbance 



reached Krisuvik in the Faxafloi area and was felt strongly at Reykjanea 

 Skaga. II 



1725 Between April 1 and 2 there were terrible earthquakes in Ames- and Rangar- 



sysla. In the same morning fire burst out of the ground round Hekla. Ill 



1726 Earthquakes late in the summer hi Rangarvellir. In the winter there had 



been an eruption in the Eastern Jokulls. II 



1 732 Severe earthquake on Sept. 7 in Rangarvellir and Eystrihreppr ; the people 

 took to living in tents, as the shocks continued for nearly half a month. II 



1734 On March 21 a severe earthquake occurred in Arnessysl a, particularly in Floi. 



1749 A severe earthquake in the Sudurland, particularly in Olfus; it was felt also 

 in Borgarjordr and elsewhere in the Faxafloi area. II 



1752 Earthquakes occurred during the winter in Olfus. II 



1766 Many earthquakes in the country round Hekla during an eruption which 

 commenced April 5. The shocks were felt particularly to the south-west 

 of the volcano and were destructive in Arnessysla, particularly in Olfus, on 

 September 9 and 10. They spread west to the Faxafloi area (Reykjanes) 

 and south to the Vestmanna Islands off the coast. Two to four shocks 

 were generally experienced every twenty -four hours. Ill 



1784 On August 14 and 16 there were severe earthquakes all over the Sudurland, 

 ' the worst that had happened in Iceland since the land became inhabited.' 

 They were strongest in Arnessysla and Rangarsysla, particularly the 

 former, but were felt all over the south, and spread not oidy to the Faxa- 

 fl6i area (Snaefell), but even to Isafjordr in the extreme north-west of 

 Iceland. 

 The Vestmanna islands also were severely shaken, and shocks were felt 

 even in Skaptafellsysla, east of Rangarsysla towards the Vatna Jokvill. 

 The seismic disturbance lasted till Christmas. Ill 



