The duty of the laborious classes, in times of alarm : deduced as well from the sufferings to which they, in case of invasion, would be particularly exposed, as from the comforts and advantages of their present situation in this country. A sermon. Preached at Trinity, Whitehaven, on Monday the fifth of June, 1797, at the anniversary meeting of the Friendly Societies. And published at their particular desire. By the Rev. C.C. Church, Rector of Gosforth, and minister of Trinity, Whitehaven.