To the freeholders, freemen, and inhabitants of the city of New-York; and particularly to our steady friends and associates, the children and Negroes of the said city : The petition of Isaac Sheer-off, Alexander M'Doubtful, Peter Van-der-fight-not, and others, their adherents and abettors; Most impudently sheweth, that as a non-importation is said to be concluded on, and a non-exportation in contemplation.