In the wake of an easterly squall the sloop Arrow, Lemuel Vinton master and owner, was making her way along the low coast, southward, from Snipe Point, one of the islands in Florida Bay about twelve miles northeast of Key West. With every sail closehauled and drawing until the bolt ropes creaked under the strain, the Arrow laid a fairly straight course toward Key West. She bore a startling message, the nature of which her captain had considered of sufficient importance for him to prolong a cruise he had undertaken and to hasten back to the port whence he had sailed, twenty-four hours previously, to inform the authorities.