The warmer portions of the temperate zone are naturally most favorable to the preservation of stone monuments. Thus, for instance, in Persepolis, where there has been no intentional destruction, the stones lie so accurately superimposed the one on the other that the lines of junction can frequently be not even seen. The amphitheatre of Pola has lost in two thousand years only two lines from the angles of the stones.[209-2] The Elgin marble statues would certainly have lasted longer in Greece than they will in England. On the other hand, warm and dry climates have a very peculiar and exceedingly frightful species of nature-consumption in the locust plagues. The principal countries affected by such consumption are Asiatic and African Arabistan, the land of the Jordan and Euphrates, Asia Minor, parts of Northern India. On Sinai, locust plagues occur, on an average, every four or five years; but from 1811 to 1816, for instance, they destroyed everything each year. Their course is in its effects like an advancing conflagration. It turns the green country, frequently in a single day, into a brown desert; and famine and pestilence follow in its path.[209-3] The colder regions of the temperate zone are exposed to danger and damage from land-slides in their long series of mountains, and from avalanches, from quicksands in many of their plains, from floods and the total destruction of land along their coasts;[209-4] but, on the other hand, they are, relatively speaking, freest from hurricanes, earthquakes and volcanoes, the ravages of which no human art or foresight is competent to cope with. From the point of view of civilization and of politics there is here a great advantage. See § 36. The former maritime power of Venice and of Holland is closely allied to the dangers with which the sea continually threatened them, and which was a continual spur to both. But, on the other hand, the danger from earthquakes which always impends over South America and Farther India, must produce consequences similar to those of anarchy or of despotism, because of the uncertainty with which they surround all relations. See § 39.[209-5] [Footnote 209-1: _Ritter_, Erdkunde VI, 180 ff; _Schomburgk_ in the Ausland, 1843, Nr. 274; _Humboldt_, Relation hist., I, 306; Neuspanein, IV, 379; _Pöpping_, Reise, II, 197 ff., 237 ff. The ant, even in Marcgrav's time, was called the _rey do Brazil_.]