periodical wind which generally blows in Italy and Dalmatia every year about Easter. It blows from the south-east by south; it is attended with heat, but not rain; its ordinary period is twenty days, Portus, and it usually ceases at sunset. When the sirocco does not blow in this manner, the summer is almost free from Dalmatian westerly winds, whirlwinds, and storms. This wind is injurious to plants, drying and burning up the buds; though it hurts not men any otherwise than by causing an extraordinary weakness and languor; inconveniences that are fully compensated by a plentiful sowing, and a good crop of corn on the mountains. In the summer time, when the westerly wind ceases for a day, it is a sign that the sirocco will blow the day following, which usually begins with a sort of whirlwind.

Siskin. See Fringilla, Ornithology Index.

Sison, bastard stone parsley, a genus of plants belonging to the class of pentandra, and to the order of digyna; and in the natural system arranged under the 4th order, umbellatae. See Botany Index.