G. decypher'd: or, remarks on a late book [by Dean Swift] intitled, Travels into several remote nations of the World. By Capt. L. G.: vindicating the Reverend Dean on whom it is maliciously father'd: with some probable conjectures concerning the real author. To which is prefix'd a prefatory discourse concerning decyphering. [By J. Arbuthnot.] The second edition, with a complete key