Turkey's Arabian possessions comprise, besides El-Hasa on the Persian Gulf, the low-lying, hot and insalubrious Tehama and the south-western highlands (vilayets of Hejaz and Yemen) stretching continuously along the east side of the Red Sea, and including the two holy cities of Mecca and Medina.
But in spite of his success Guido could not be induced to remain in Rome, the insalubrious air of which seems to have affected his health.
The sultan of Achin opposed by force of arms the efforts of the Dutch to make their occupation effective, and has succeeded in maintaining a vigorous resistance, the Dutch colonial troops suffering severely from the effects of the insalubrious climate.
It has a population of about 10,000, an insalubrious climate and bad water.