Hints for protecting the public against the extortion and insolence of hackney-coachmen : a critical inquiry into the powers vested in the commissioners, a defence of the ticket-system, remarks on the difference of opinion at Bow-Street and Queen-Square, on the construction of the Act 54th George III., and suggestions for amending the laws of hackney-coaches : in a letter to Stephen Lushington, Esq. M.P., with an appendix containing abstracts of the existing acts and the bye-laws never before published /