The men of war are taking prizes daily. They took a sloop a few days ago from Providence, Rhode-Island, with a cargo of 3000 l. on board. A gentleman in St. Eustatia received a letter from his friend in Martinico the day before yesterday, informing him of advice from France, that 36 ships of the line and frigates were waiting, all prepared for an expedition, but their destination was kept a profound secret.