Scientific Intelligence — Geology. 203 



Shocks, accompanied by the same phenomenon, were renewed every day 

 up to the 23d. On the 18th and 20th they were felt nearly at all hours 

 of the day. On the 24th, at 10 minutes past 2 o'clock in the morning, a 

 subteiTanean noise was heard, and immediately afterwards the shock of 

 an earthquake was felt so severely, that the inhabitants awoke in sudden 

 fright, abandoned their houses in the greatest haste, and left the town, 

 A strong wind from N.N.E. had risen immediately before the time when 

 these shocks were felt ; the sky cleared, and some bands of deep blue 

 were distinctly seen in the neighbourhood of the Milky Way. On the 

 25th, about 3 o'clock in the morning, the ground again trembled for 

 three seconds ; the inhabitants of Ragusa were in the greatest conster- 

 nation. On the 26th, about 27 minutes past 3 in the morning, another 

 shock, much more violent than that of the 24th, was felt. The stars 

 sparkled in a sky of the purest azure ; but the scene changed in a few 

 seconds. After a subterranean noise, many severe shocks succeeded each 

 other at short intervals. At the same time a wind from the south-east 

 enveloped the sky in clouds, the barometer sunk to 28.2, and the ther- 

 mometer indicated 10° R. (54°.50 F.). All the houses of the town were 

 shaken to such a degree, that they ran the risk of being entirely destroyed 

 on the recurrence of a shock, even though not very severe. These 

 shocks were also felt in the islands of Curzola and Meleda.* 



Since the month of September, new shocks have taken place at Ra- 

 gusa and its neighbourhood ; but we have not obtained sufficiently exact 

 information regarding them. 



In consequence of the frequent shocks of earthquake which have oc- 

 curred at Khalki since I7th September, this unfortunate island has been 

 completely ruined. The island of Scarpanto, situated at a short dis- 

 tance from KJialki, has likewise been subject to many severe earthquakes. 

 At Rhodes, on the 10th October, about an hour after midnight, a severe 

 shock was likewise felt, and the undulation was prolonged beyond 30 

 seconds. At Khalki, a stream of boiling and sulphureous water was 

 thrown up on the declivity of a small hill, at the same time that the 

 shocks took place. This stream still continues to flow. 



On the 3d October, a shock of an earthquake was felt, at 10 o'clock 

 in the evening, in some parts of the department of Ille-et-Vilalne. It 

 lasted for two seconds. Another shock occurred on the 4th, and con- 

 tinued for upwards of 40 seconds. 



The shock of an earthquake was felt at Chateaugiron on 5th ^October, 

 about 45 minutes past 9 in the morning. This was taken by many people 

 for a peal of thunder ; it did not last longer than 2 seconds. On the 



♦ We need hardly remind our geological readers, that in the summer of 1826 

 a Commission was sent by the Austrian Grovernment to the island of Meleda, to 

 investigate the repeated detonations which had caused much alarm to the inhabi- 

 tants from March 1822 up to that period. The Commissioners were Messrs Riepl 

 and Partsch, and an interesting report was published by the latter at Vienna in 

 1826, accompanied by a beautiful map. — Edit. 



