During a southerly gale on the 25th Feb., the sloop Prosperity, of Portmadoc, sank off Aber- sooh, but the mast remaining above water, the crew found refuge on it till towards daybreak. After being four hours in their fearful position, their shouts were heard by the men of Abersoch, who, rushing j from their beds, launched the Life-boat I Mabel Louisa, and rescued them all..