The 42d regiment, or Royal Highlanders, which embarked at Greenock on Friday se'nnight, are still lying there, as they got orders to wait for General Frazer's regiment, and to sail together, under. convoy of the Flora frigate. It is thought Frazer's regiment. will not be ready to embark for some days yet. Many of the transports that are to carry over these troops have mounted guns, ready to defend themselves in case of any attack from the American privateers.