- Coral fishing, which fell off between 1889 and 1892 on account of the temporary closing of the Sciacca coral reefs has greatly decreased since 1884, when the fisheries produced 643 tons,-whereas in 1902 they only produced 225 tons.
- The Sciacca reefs were again closed for three winters by a decree of 1904.
- Sciacca (Gazz., 1904, 34 (i.), P. 447) have shown that liquid nitric oxide and oxygen, or gaseous nitric oxide a.nd liquid oxygen, mixed in all proportions and yielded nitrogen trioxide, whilst gaseous nitric oxide mixed with excess, of oxygen always gave the trioxide if the mixture was kept below -110° C. They also state that nitrogen trioxide is stable at ordinary pressure up to -21° C. N.
- They rise again to the surface in the southern part of the island, in the hills which lie to the north of Sciacca and Bivona.
- The chief towns in each of these provinces, with their communal populations in 1901, are as follow: Caltanissetta (43,023), Castrogiovanni (26,081), Piazza Armerina (24,119), Terranova (22,019), San Cataldo (18,090); Catania (146,504), Caltagirone (44,527), Acireale (35,203), Giarre (26,194), Patera) (22,857), Leonforte (21,236), Bronte (20,166), Vizzini (18,013), Agira (17,634), Nicosia (15,811),(15,811), Grammichele (15,017); Girgenti (24,872), Canicatti (24,687), Sciacca 4 (24,6 5), Licata (22,993), Favara (20,403); Messina (147,106), Racalmuto (16,028), Palma (14,384), Barcellona (24,133), Milazzo (16,214), Mistretta (14,041); Palermo (305,716), Partinico (23,668), Monreale (23,556), Termini Imerese (20,633), Bagheria (18,329), Corleone (16,350), Cefalu (14,518); Syracuse (31,807),(31,807), Modica (49,951), Ragusa (32,453), Vittoria (32,219), Comiso (25,837), Noto (22,284), Lentini (17,100), Avola (16,301), Scicli (16,220), Palazzolo Acreide (15,106) Trapani (61,448), Marsala (57,824), Alcamo (51,798), Monte S.
- Carlo (whence there are diligences to Sciacca on the south coast) and another to Castelvetrano, Marsala and Trapani, going first almost as far as the south coast and then running first west and then north along the west coast.
- The only part of the coast of the island which has no railways is that portion of the south coast between Porto Empedocle and Castelvetrano (Sciacca lies about midway between these two points), where a road already exists, and a railway is projected, and the precipitous north coast between Palermo and Trapani.
- Of Sciacca) lasted from 102 to 99, the time of the Cimbrian invasion.