Taking the month of September to begin with, the weather is very fine, a continuation of summer; cloudless skies day after day, with perhaps a rain and thunder storm or two, only—one generally in the first week, and another about September 17th, but always brought on by a north to north-west wind. As a rule the constant summer land breezes (north-east about) are of less intensity in September than in August, which allows for a keeping up of an average day temperature, as the Marmora, Bosphorus, and Dardanelles owe their moderate day temperature to these daily breezes (called “Meltem”) from the north to north-east during the summer. The wind generally dies away at sunset, which fact, however, rather tends to make the night temperature higher during the summer; the result being that, as between day and night temperature, when the north wind blows during the day, there is but little drop in the temperature and the nights are hot. About September 21st to 24th there is, however, a marked period in the weather. It is either a calm as regards winds, and consequently very hot, or such period is marked by southerly winds, but not of any great intensity or strength—very dry, hot winds. These are the first southerly winds of autumn, but as a general rule such period is in nautical terms “calm and fine, with southerly airs.” From such time up to the end of September the north or north-easterly winds set in again, but later on, generally about the first week of October, the winds get more to the north and north-west, and there is a heavy thunderstorm or so, and as a result a drop in temperature. From October 10th to 14th there is a period of uncertainty; sometimes a south-westerly wind, which veers round to the north-west, and a good rain-storm. The first distinct drop in temperature now takes place (about the 10th to the 14th), one feels autumn in the air, the nights continue fairly warm; and this period continues fine and generally calm up to about the 20th—sometimes the 18th or 19th—when a well defined and almost absolutely regular period is entered upon. This spell begins with three or four days of very heavy northerly or north-westerly wind, sometimes a gale, generally accompanied by rain for several days, and it is this period—from October 20th to 25th—which is intensely interesting to naturalists owing to the big passage of all kinds of birds, the arrival of the first woodcock, the clockwork precision of the passage of the stock-doves (pigeons); in fact, it is the moment of the big migration, when the air night and day is full of birds on the move. Towards the end of October, and in the way of a counter-coup or reaction to the northerly gales, there is generally experienced a fierce three or four days of southerly winds, sometimes gales.