"A mountain near Sigillo, a city twenty-two miles distant from Aquila, had on its summit a very large plain surrounded with rocks like a wall. The earthquake of the 2d of February, changed this plain into a gulph of unequal breadth, whose greatest diameter is twenty-five fathoms and the least twenty; the depth of it has not been discovered, although a line 300 fathoms has been let down in it. At the time this opening was made, flames were seen to issue out, and afterwards a great smoke which lasted three days with some interruptions. "At Genoa on the 1st and 2d of July 1703, there were two slight earthquakes, the last was felt only by the people on the pier: at the same time the sea in the port sunk six feet, and remained so a quarter of an hour. "The sulphurous water in the road from Rome to Tivoli it diminished two feet and a half, both in the bason and in the canal. In many places of the plain, called Testine, the springs and rivulets, which formed morasses, are all dried up. The waters of the lake called l'Enfer is also lowered three feet. In place of the ancient springs new ones have appeared at above a league distance, so that possibly they are the same waters which have changed direction[V]. [V] Anno 1704, page 10. "The same earthquake which, in 1538, formed Monti di Cinere, near Pozzoli, filled lake Lucrin with stones, earth and cinders, so that this lake is now a marshy ground.[W] [W] See Ray's Discourses, page 12. "There are earthquakes also felt at some distance at sea, says Mr. Shaw; in 1774, being on board the Gazella, an Algerine vessel, mounting 50 guns, three violent shocks were felt one after the other, as if every time a weight of 20 or 30 tons had been thrown on the ballast. This happened on a part of the Mediterranean that was more than 200 fathom deep. He relates also, that others had felt earthquakes much more considerable in other parts, and one among the rest at 40 leagues west from Lisbon."[X] [X] See Shaw's Travels. Schouten, speaking of an earthquake in the Malacca islands, says, that the mountains were shaken, and the vessels at anchor in 30 or 40 fathoms water were shook, as if they had struck against rocks or banks. "Experience, continues he, teaches us every day that the same happens in the open sea, where no bottom is to be met with, and that ships are tossed to and fro by earthquakes, even where the sea is tranquil."