Besides these are Syme, Telos, Nisyros, Calymnos, Leros and Patmos, all of which have been inhabited, both in ancient and modern times, and some of which contain excellent harbours.
Of these Nisyros alone is of volcanic origin; the others belong to the same limestone formation with the rocky headlands of the coast.
Almost every householder in both islands is the owner, joint owner or skipper of a sailing ship. The southern Sporades are as follows: Ica'ria, Patmos, Leros, Calymnus, Astropalia (Astypalaea or Stampalia), Cos (Stanko), Nisyros, Tilos or Episcopi, Syme, Khalki, Rhodes, Crete and many smaller isles.
Nisyros (pop. about 2500) possesses hot sulphur springs.
After Ptolemy returned home, indeed, Seleucus regained northern Syria and the eastern provinces, but the naval predominance of Egypt in the Aegean remained, although there are traces of its being replaced locally, towards the end of Euergetes' reign, by that of Macedonia - in Amorgos, Naxos, Syros, Nisyros, Cos and parts of Crete (see Beloch, III.