Sentence:  Seeing therefore those who now possess the employment by all evident signs wish themselves well rid of it; and that no man of worth, none that is not a plain unthrift of his own hours, is ever likely to succeed them, except he mean to put himself to the salary of a press <WSD>corrector</WSD>; we may easily foresee what kind of licensers we are to expect hereafter, either ignorant, imperious, and remiss, or basely pecuniary. 
Meaning of the word marked with <WSD> tags:  A proofreader.