Every one knows that Ireland, for her sins, maintains two distinct, regularly organised bodies of police; the duties of the one being to prevent the distillation of potheen or illicit whiskey, those of the other to check the riots created by its consumption. These forces, for they are in fact military forces, have each their officers, sub-officers, and privates, as the army has; their dress, full dress, and half dress; their arms, field arms, and house arms; their barracks, stations, and military regulations; their captains, colonels, and commander-in-chief, but called by other names; and, in fact, each body is a regularly disciplined force, only differing from the standing army by being carried on in a more expensive manner. The first of these--that for preventing the distillation of potheen, commonly called the revenue police--was, at the time of our story, honoured by the services of Myles Ussher. He held the office of one of the sub-inspectors in the county of Leitrim, and he resided in the town of Mohill; he had a body of about five-and-twenty men under him, with a sergeant; and his duty was, as I have before said, to prevent the distillation of potheen. This was only to be done by seizing it when made, or in the process of making; and, as a considerable portion of the fine levied in all cases possible from the dealers in the trade, became the perquisite of the sub-inspector or officer effecting the seizure, the situation in a wild lawless district was one of considerable emolument; consequently gentlemen of repute and good family were glad to get their sons into the service, and at the present time, a commission in the revenue police is considered, if not a more fashionable, at any rate a more lucrative appointment than a commission in the army. Among these officers some of course would be more active than others, and would consequently make more money; but it will be easily imagined, that however much the activity of a sub-inspector of revenue police might add to his character and standing at headquarters, it would not be likely to make him popular in the neighbourhood in which he resided.