Both the daily horde of exhausted, hungry immigrants landing on the shores of Sicily and those who tend to them after their arrival are in despair. Even before this week some 2,000 immigrants were known to be on the island. Twice those from last year are arriving, even as the season of fair weather has only begun. The police prefect of Sicily has appealed for help from Rome, but in the meantime the Sicilian holding centers are on the verge of collapse. Many, including a number of pregnant women, arrived via Libya from Syria