BY 1816 Pittsburgh had so far outgrown the provisions of the borough charter that, just as a parent fits his growing son with a larger suit of clothes, the state legislature formulated and passed a bill incorporating as a city "The Mayor, Aldermen and Citizens of Pittsburgh." This measure, signed by Governor Simon Snyder on March 18, set up a city government that consisted of a mayor, select and common councils, a recorder, and twelve aldermen. The select council consisted of nine members, and the common council of fifteen; both were elected by popular vote, and were to enact ordinances for the government of the city and to elect the mayor and the other executive officers. The governor appointed the recorder and the twelve aldermen, and the mayor was to be elected annually from among the latter.
It is probable that the burden that devolved upon the county court as the result of the growth of Pittsburgh was one of the reasons for passing the city charter. At any rate the mayor's court was created, consisting of the recorder and the aldermen, and they were authorized to try any cases formerly handled by the Court of Quarter Sessions of the Peace as well as any violations of the city ordinances. The mayor and the aldermen were separately to have the powers of justices of the peace, and it was