The spirit of gaming and dissipation which prevails in London, promoted already in no inconsiderable degree by profligate characters from the Continent, the opulence of the People, and the great mass of active property in circulation, will afford a wide field for the exercise of the invention and wits of that description of men, both foreigners and natives, who infested Paris under the old Government, and which rendered a more than ordinary attention to its Police indispensably necessary.-- The termination of the present war will probably throw into this country a vast number of idle, profligate, and depraved characters, natives of this, as well as of other nations, who will require to be narrowly watched by a vigilant and well-regulated Police. The probability of such an accession to the numbers already engaged in acts of delinquency, serves to establish new and incontrovertible arguments in favour of the proposed _Board of Responsible Commissioners_, for managing the affairs of the Police of the Metropolis; to form a _Centre-point_, and to bind the System together. To be well prepared against every possible evil, is one great step towards prevention; and among the many advantages already detailed, as likely to result from a _Board of Police Revenue_, this would be none of the least. In every view in which the subject can be considered, such a System, strengthened by good and apposite Laws, could not fail to be productive of vast benefits to the Community. _Petty Thefts_ affecting all ranks who have any property to lose, and destroying the moral principle, would be greatly abridged:--as would also the plunder from vessels in the River Thames, as well as from the public Arsenals, Dock-yards, and Ships of War. The more atrocious Crimes of Burglary and Highway Robbery, would suffer a severe check, in the embarrassments which would arise from the System of detections and Rewards--from the restrictions proposed to be laid upon Receivers of Stolen Goods; upon Night Coaches,--and from other regulations applicable to those particular offences. A large proportion of the _Coiners_, _Dealers_, and _Utterers of Base Money_, feeling the risk of detection, as well as of punishment, greatly extended and increased, would probably abandon the business as hazardous and destructive. The completion of the General System would also, either collaterally or immediately, reach the tribe of Cheats, Swindlers, and Lottery Offenders, in such a manner as to occasion a considerable reduction of their number, by narrowing the ground, and destroying the resources by which they at present flourish.