The Phillippa, Capt. ———— [Maitland], is arrived at Georgia, from London. A letter from the Captain, dated July 12, says, it was with much difficulty he could land his goods; a schooner, with ten carriage guns (six pounders) and 40 men, with small arms, boarded him outside the bar, and, the moment the ship came to anchor, took every barrel of gunpowder that. was in the ship; and each side the bar and Cockspur island were lined with many hundreds of armed men.