43. Such are the phenomena. But Posidonius says, that the people being addicted to magic, and practising incantations, (by these means) consolidate the asphaltus, pouring upon it urine and other fetid fluids, and then cut it into pieces. (Incantations cannot be the cause), but perhaps urine may have some peculiar power (in effecting the consolidation) in the same manner that chrysocolla[662] is formed in the bladders of persons who labour under the disease of the stone, and in the urine of children. It is natural for these phenomena to take place in the middle of the lake, because the source of the fire is in the centre, and the greater part of the asphaltus comes from thence. The bubbling up, however, of the asphaltus is irregular, because the motion of fire, like that of many other vapours, has no order perceptible to observers. There are also phenomena of this kind at Apollonia in Epirus. 44. Many other proofs are produced to show that this country is full of fire. Near Moasada[663] are to be seen rugged rocks, bearing the marks of fire; fissures in many places; a soil like ashes; pitch falling in drops from the rocks; rivers boiling up, and emitting a fetid odour to a great distance; dwellings in every direction overthrown; whence we are inclined to believe the common tradition of the natives, that thirteen cities[664] once existed there, the capital of which was Sodom, but that a circuit of about 60 stadia around it escaped uninjured; shocks of earthquakes, however, eruptions of flames and hot springs, containing asphaltus and sulphur, caused the lake to burst its bounds, and the rocks took fire; some of the cities were swallowed up, others were abandoned by such of the inhabitants as were able to make their escape. But Eratosthenes asserts, on the contrary, that the country was once a lake, and that the greater part of it was uncovered by the water discharging itself through a breach, as was the case in Thessaly.[665] 45. In the Gadaris, also, there is a lake of noxious water. If beasts drink it, they lose their hair, hoofs, and horns. At the place called Taricheæ,[666] the lake supplies the best fish for curing. [CAS. 765] On its banks grow trees which bear a fruit like the apple. The Egyptians use the asphaltus for embalming the bodies of the dead.