Conspiracy in Hayti.
--The Watchman, of Kingston, Jamaica, states that a plot has been laid to disturb the peace of the country. The conspirators, having been discovered, were apprehended, and having been tried, three were sentenced to be shot, which sentence had been carried into execution. Throughout the entire country congratulatory addresses from the inhabitants had been sent in to the government, expressive of their readiness at a moment's call to put down anything or persons that would tend to disturb the peace of the country.