The effects of volcanoes mean that the effects of earthquakes appear over a vast expanse of land. Unlike the effects of mountains of fire, which extend only near the mountain of fire. It has also happened that the earthquake increases in proportion to the distance from the volcano. Some explained this by saying that the fire under the earth seeks an outlet to escape. If there is a volcano in the land, it escapes through it, and the force of the fire diminishes, making the earthquake less intense, unlike in land devoid of volcanoes, where the fires seek an outlet within it and do not find it, so the earth splits. Some wise men also said that both volcanic events and earthquakes originate from the attraction of the force called in French "attraction" (with a kasra on the hamza, sukun on the kaf, kasra on the 'ayn, ra, kasra on the sin, and fatha on the ta), called "al-ra'is" (with a shadda on the ra and kasra on the sin), which is specific to electricity according to the wise men. Some said in response to this statement that it contradicts what some wise men relied upon in constructing the earth and organizing its rock layers. It is an established principle that the eruption of a volcano is more dominant the lower its elevation, and it decreases as the elevation increases. This is what has been customary, and God Almighty knows best. On the fifteenth day, we anchored at the city of Messina and did not disembark from the ship at all, because they do not allow anyone coming from the eastern lands to enter their country except after two mornings, which is a period of several days to eliminate the smell of contagion. However, they provide humans with all their needs and deliver food in a container with vinegar or the like, with full precautions. Refer to the first chapter of the second article. We provisioned ourselves from this city with what we needed of fruits, vegetables, fresh water, and so on. We stayed there for six days and observed from afar its tall palaces, all of which were magnificent and towering. We saw them lighting their lamps before sunset and after sunrise.