U.S. troops under General Jesup drove his band southward into the Everglades, but Osceola, skillfully using guerrilla tactics, resisted capture. Fighting ceased early in 1837, only to break out again in June.
Table salt is a fine-grained salt produce from either rock salt or sea salt like that produced in Cargill's evaporation ponds. Iodized table salt contains a small amount of potassium iodide and dextrose (a sugar used to stabilize the iodide) as a dietary supplement to prevent goiter and mental retardation.
Answers.com says that the expression is a translation of the Latin cum grano salis, which Pliny used in describing Pompey's discovery of an antidote for poison (to be taken with a grain of salt).   To take 'with a grain of salt' means to take with a heavy dose of skepticism, caution and suspicion.