A rational defence of non-conformity : wherein the practice of nonconformists is vindicated from promoting popery, and ruining the church, imputed to them by Dr. Stillingfleet in his Unreasonableness of separation : also his arguments from the principles and way of the reformers, and first dissenters are answered : and the case of the present separation, truly stated, and the blame of it laid where it ought to be : and the way to union among Protestants is pointed at /