Dos Pou Stō. Or, An Answer To Sure Footing, So far as Mr. Whitby is concerned in it. Wherein the Rule and Guide of Faith, the In- terest of Reason, and the Authority of the Church in Matters of Faith, are fully handled and vindicated; From The Exceptions of Mr. Serjeant, And Petty Flirts of Fiat Lux. Together with An Answer to Five Questi- ons propounded by a Roman Catholick